diff --git a/ghost/core/core/server/services/collections/PostsRepository.js b/ghost/core/core/server/services/collections/PostsRepository.js
index 60e5cb12b2..6a5185afe8 100644
--- a/ghost/core/core/server/services/collections/PostsRepository.js
+++ b/ghost/core/core/server/services/collections/PostsRepository.js
@@ -1,16 +1,44 @@
 class PostsRepository {
-    constructor({models, browsePostsAPI}) {
+    constructor({models, browsePostsAPI, moment}) {
         this.models = models;
         this.browsePostsAPI = browsePostsAPI;
+        this.moment = moment;
+    }
+
+    /**
+     * @NOTE: This is a copy of the date serialization from Posts Content API.
+     *        We need the dates serialized instead of keeping them as plain dates
+     *        to be able to apply NQL filtering inside of Collections.
+     * @param {Object} attrs
+     * @returns
+     */
+    serializeDates(attrs) {
+        const formatDate = (date) => {
+            return this.moment(date)
+                .toISOString(true);
+        };
+
+        ['created_at', 'updated_at', 'published_at'].forEach((field) => {
+            if (attrs[field]) {
+                attrs[field] = formatDate(attrs[field]);
+            }
+        });
+
+        return attrs;
     }
 
     async getAll({filter}) {
-        const posts = await this.models.Post.findAll({
-            // @NOTE: enforce "post" type to avoid ever fetching pages
-            filter: `(${filter})+type:post`
+        const response = await this.browsePostsAPI({
+            options: {
+                filter: `(${filter})+type:post`,
+                limit: 'all'
+            }
         });
 
-        return posts.toJSON();
+        response.posts = response.posts
+            .map(this.serializeDates.bind(this));
+
+        return response.posts;
     }
 
     async getBulk(ids) {
@@ -20,6 +48,9 @@ class PostsRepository {
             }
         });
 
+        response.posts = response.posts
+            .map(this.serializeDates.bind(this));
+
         return response.posts;
     }
 }
@@ -27,6 +58,7 @@ class PostsRepository {
 module.exports = PostsRepository;
 
 module.exports.getInstance = () => {
+    const moment = require('moment-timezone');
     const models = require('../../models');
     const browsePostsAPI = async (options) => {
         const rawPosts = await require('../../api/').endpoints.posts.browse.query(options);
@@ -35,5 +67,5 @@ module.exports.getInstance = () => {
         return options.response;
     };
 
-    return new PostsRepository({models, browsePostsAPI});
+    return new PostsRepository({models, browsePostsAPI, moment});
 };
diff --git a/ghost/core/test/e2e-api/admin/__snapshots__/collections.test.js.snap b/ghost/core/test/e2e-api/admin/__snapshots__/collections.test.js.snap
index d1a039dba2..c87c765bd6 100644
--- a/ghost/core/test/e2e-api/admin/__snapshots__/collections.test.js.snap
+++ b/ghost/core/test/e2e-api/admin/__snapshots__/collections.test.js.snap
@@ -104,48 +104,6 @@ Object {
 }
 `;
 
-exports[`Collections API Automatic Collection Filtering Creates an automatic Collection with a relational tag filter 1: [body] 1`] = `
-Object {
-  "collections": Array [
-    Object {
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-      "description": "Test Collection Description with relational tag filter",
-      "feature_image": null,
-      "filter": "tag:kitchen-sink",
-      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-      "posts": Array [
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": 0,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": 1,
-        },
-      ],
-      "title": "Test Collection with relational tag filter",
-      "type": "automatic",
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-    },
-  ],
-}
-`;
-
-exports[`Collections API Automatic Collection Filtering Creates an automatic Collection with a relational tag filter 2: [headers] 1`] = `
-Object {
-  "access-control-allow-origin": "http://127.0.0.1:2369",
-  "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "431",
-  "content-type": "application/json; charset=utf-8",
-  "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
-  "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
-  "location": StringMatching /https\\?:\\\\/\\\\/\\.\\*\\?\\\\/collections\\\\/\\[a-f0-9\\]\\{24\\}\\\\//,
-  "vary": "Accept-Version, Origin, Accept-Encoding",
-  "x-cache-invalidate": "/*",
-  "x-powered-by": "Express",
-}
-`;
-
 exports[`Collections API Browse Can browse Collections 1: [body] 1`] = `
 Object {
   "collections": Array [
@@ -284,7 +242,7 @@ Object {
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a77",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "We've crammed the most important information to help you get started with Ghost into this one post. It's your cheat-sheet to get started, and your shortcut to advanced features.",
       "custom_template": null,
       "email_only": false,
@@ -303,7 +261,7 @@ Object {
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 2,
       "slug": "welcome",
       "status": "published",
@@ -311,7 +269,7 @@ Object {
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/welcome/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -321,7 +279,7 @@ Object {
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a76",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "How to tweak a few settings in Ghost to transform your site from a generic template to a custom brand with style and personality.",
       "custom_template": null,
       "email_only": false,
@@ -352,7 +310,7 @@ Object {
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 3,
       "slug": "design",
       "status": "published",
@@ -360,7 +318,7 @@ Object {
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/design/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -370,7 +328,7 @@ Object {
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a75",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "A full overview of all the features built into the Ghost editor, including powerful workflow automations to speed up your creative process.",
       "custom_template": null,
       "email_only": false,
@@ -389,7 +347,7 @@ Object {
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 5,
       "slug": "write",
       "status": "published",
@@ -397,7 +355,7 @@ Object {
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/write/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -407,7 +365,7 @@ Object {
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a74",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "How Ghost allows you to turn anonymous readers into an audience of active subscribers, so you know what's working and what isn't.",
       "custom_template": null,
       "email_only": false,
@@ -426,7 +384,7 @@ Object {
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 2,
       "slug": "portal",
       "status": "published",
@@ -434,7 +392,7 @@ Object {
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/portal/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -444,7 +402,7 @@ Object {
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a73",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": null,
       "custom_template": null,
       "email_only": false,
@@ -469,7 +427,7 @@ Using subscrip",
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 1,
       "slug": "sell",
       "status": "published",
@@ -477,7 +435,7 @@ Using subscrip",
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/sell/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "paid",
@@ -487,7 +445,7 @@ Using subscrip",
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a72",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "A guide to collaborating with other staff users to publish, and some resources to help you with the next steps of growing your business",
       "custom_template": null,
       "email_only": false,
@@ -506,7 +464,7 @@ Using subscrip",
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 2,
       "slug": "grow",
       "status": "published",
@@ -514,7 +472,7 @@ Using subscrip",
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/grow/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -524,7 +482,7 @@ Using subscrip",
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a71",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "Work with all your favorite apps and tools or create your own custom integrations using the Ghost API.",
       "custom_template": null,
       "email_only": false,
@@ -544,7 +502,7 @@ Using subscrip",
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 1,
       "slug": "integrations",
       "status": "published",
@@ -552,7 +510,7 @@ Using subscrip",
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/integrations/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -562,7 +520,7 @@ Using subscrip",
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "618ba1ffbe2896088840a6e7",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": null,
       "custom_template": null,
       "email_only": false,
@@ -592,7 +550,7 @@ Definition listConsectetur adipisicing elit, sed do eiusmod tempor incididunt ut
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 1,
       "slug": "not-so-short-bit-complex",
       "status": "published",
@@ -600,7 +558,7 @@ Definition listConsectetur adipisicing elit, sed do eiusmod tempor incididunt ut
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/not-so-short-bit-complex/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -610,7 +568,7 @@ Definition listConsectetur adipisicing elit, sed do eiusmod tempor incididunt ut
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "618ba1ffbe2896088840a6e3",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": null,
       "custom_template": null,
       "email_only": false,
@@ -645,7 +603,7 @@ mctesters
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 0,
       "slug": "short-and-sweet",
       "status": "published",
@@ -653,7 +611,7 @@ mctesters
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/short-and-sweet/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -663,7 +621,7 @@ mctesters
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "618ba1ffbe2896088840a6e1",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": null,
       "custom_template": null,
       "email_only": false,
@@ -684,7 +642,7 @@ Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac tu
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 1,
       "slug": "ghostly-kitchen-sink",
       "status": "published",
@@ -692,7 +650,7 @@ Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac tu
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/ghostly-kitchen-sink/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -702,7 +660,7 @@ Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac tu
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "618ba1ffbe2896088840a6df",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "This is my custom excerpt!",
       "custom_template": null,
       "email_only": false,
@@ -721,7 +679,7 @@ Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac tu
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 1,
       "slug": "html-ipsum",
       "status": "published",
@@ -729,7 +687,7 @@ Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac tu
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/html-ipsum/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -752,49 +710,7 @@ exports[`Collections API Browse Posts Can browse Collections Posts 2: [headers]
 Object {
   "access-control-allow-origin": "http://127.0.0.1:2369",
   "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "45967",
-  "content-type": "application/json; charset=utf-8",
-  "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
-  "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
-  "vary": "Accept-Version, Origin, Accept-Encoding",
-  "x-powered-by": "Express",
-}
-`;
-
-exports[`Collections API Browse Posts Can browse Collections Posts 3: [body] 1`] = `
-Object {
-  "collection_posts": Array [
-    Object {
-      "featured": false,
-      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-      "slug": "write",
-      "title": "Writing and managing content in Ghost, an advanced guide",
-    },
-    Object {
-      "featured": false,
-      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-      "slug": "portal",
-      "title": "Building your audience with subscriber signups",
-    },
-  ],
-  "meta": Object {
-    "pagination": Object {
-      "limit": "2",
-      "next": null,
-      "page": "2",
-      "pages": 1,
-      "prev": null,
-      "total": 2,
-    },
-  },
-}
-`;
-
-exports[`Collections API Browse Posts Can browse Collections Posts 4: [headers] 1`] = `
-Object {
-  "access-control-allow-origin": "http://127.0.0.1:2369",
-  "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "370",
+  "content-length": "46132",
   "content-type": "application/json; charset=utf-8",
   "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
   "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
@@ -811,7 +727,7 @@ Object {
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a75",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "A full overview of all the features built into the Ghost editor, including powerful workflow automations to speed up your creative process.",
       "custom_template": null,
       "email_only": false,
@@ -830,7 +746,7 @@ Object {
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 5,
       "slug": "write",
       "status": "published",
@@ -838,7 +754,7 @@ Object {
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/write/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -848,7 +764,7 @@ Object {
       "codeinjection_foot": null,
       "codeinjection_head": null,
       "comment_id": "6194d3ce51e2700162531a74",
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "custom_excerpt": "How Ghost allows you to turn anonymous readers into an audience of active subscribers, so you know what's working and what isn't.",
       "custom_template": null,
       "email_only": false,
@@ -867,7 +783,7 @@ Object {
       "og_description": null,
       "og_image": null,
       "og_title": null,
-      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "published_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "reading_time": 2,
       "slug": "portal",
       "status": "published",
@@ -875,7 +791,7 @@ Object {
       "twitter_description": null,
       "twitter_image": null,
       "twitter_title": null,
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
+      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000\\\\\\+\\\\d\\{2\\}:\\\\d\\{2\\}/,
       "url": "http://127.0.0.1:2369/portal/",
       "uuid": StringMatching /\\[a-f0-9\\]\\{8\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{4\\}-\\[a-f0-9\\]\\{12\\}/,
       "visibility": "public",
@@ -898,7 +814,7 @@ exports[`Collections API Browse Posts Can browse Collections Posts using paging
 Object {
   "access-control-allow-origin": "http://127.0.0.1:2369",
   "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "14035",
+  "content-length": "14065",
   "content-type": "application/json; charset=utf-8",
   "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
   "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
@@ -940,125 +856,6 @@ Object {
 }
 `;
 
-exports[`Collections API Can browse Collections 1: [body] 1`] = `
-Object {
-  "collections": Array [
-    Object {
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-      "description": "Collection with all posts",
-      "feature_image": null,
-      "filter": "status:published",
-      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-      "posts": Array [
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-      ],
-      "slug": "index",
-      "title": "Index",
-      "type": "automatic",
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-    },
-    Object {
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-      "description": "Collection of featured posts",
-      "feature_image": null,
-      "filter": "featured:true",
-      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-      "posts": Array [
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-        Object {
-          "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-          "sort_order": Any<Number>,
-        },
-      ],
-      "slug": "featured",
-      "title": "Featured Posts",
-      "type": "automatic",
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-    },
-    Object {
-      "created_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-      "description": "Test Collection Description",
-      "feature_image": null,
-      "filter": null,
-      "id": StringMatching /\\[a-f0-9\\]\\{24\\}/,
-      "posts": Array [],
-      "title": "Test Collection",
-      "type": "manual",
-      "updated_at": StringMatching /\\\\d\\{4\\}-\\\\d\\{2\\}-\\\\d\\{2\\}T\\\\d\\{2\\}:\\\\d\\{2\\}:\\\\d\\{2\\}\\\\\\.000Z/,
-    },
-  ],
-  "meta": Object {
-    "pagination": Object {
-      "limit": 3,
-      "next": null,
-      "page": 1,
-      "pages": 1,
-      "prev": null,
-      "total": 3,
-    },
-  },
-}
-`;
-
-exports[`Collections API Can browse Collections 2: [headers] 1`] = `
-Object {
-  "access-control-allow-origin": "http://127.0.0.1:2369",
-  "cache-control": "no-cache, private, no-store, must-revalidate, max-stale=0, post-check=0, pre-check=0",
-  "content-length": "1530",
-  "content-type": "application/json; charset=utf-8",
-  "content-version": StringMatching /v\\\\d\\+\\\\\\.\\\\d\\+/,
-  "etag": StringMatching /\\(\\?:W\\\\/\\)\\?"\\(\\?:\\[ !#-\\\\x7E\\\\x80-\\\\xFF\\]\\*\\|\\\\r\\\\n\\[\\\\t \\]\\|\\\\\\\\\\.\\)\\*"/,
-  "vary": "Accept-Version, Origin, Accept-Encoding",
-  "x-powered-by": "Express",
-}
-`;
-
 exports[`Collections API Can delete a Collection 1: [body] 1`] = `
 Object {
   "collections": Array [
diff --git a/ghost/core/test/e2e-api/admin/collections.test.js b/ghost/core/test/e2e-api/admin/collections.test.js
index 67d7592a94..2d6ac99b66 100644
--- a/ghost/core/test/e2e-api/admin/collections.test.js
+++ b/ghost/core/test/e2e-api/admin/collections.test.js
@@ -12,6 +12,7 @@ const {
     anyLocationFor,
     anyObjectId,
     anyISODateTime,
+    anyISODateTimeWithTZ,
     anyNumber,
     anyUuid,
     anyString
@@ -25,9 +26,9 @@ const matchCollection = {
 
 const matchCollectionPost = {
     id: anyObjectId,
-    created_at: anyISODateTime,
-    updated_at: anyISODateTime,
-    published_at: anyISODateTime,
+    created_at: anyISODateTimeWithTZ,
+    updated_at: anyISODateTimeWithTZ,
+    published_at: anyISODateTimeWithTZ,
     uuid: anyUuid
 };
 
@@ -352,40 +353,5 @@ describe('Collections API', function () {
                     collections: [buildMatcher(7)]
                 });
         });
-
-        it('Creates an automatic Collection with a relational tag filter', async function () {
-            const collection = {
-                title: 'Test Collection with relational tag filter',
-                description: 'Test Collection Description with relational tag filter',
-                type: 'automatic',
-                filter: 'tag:kitchen-sink'
-            };
-
-            const automaticTagCollection = await agent
-                .post('/collections/')
-                .body({
-                    collections: [collection]
-                })
-                .expectStatus(201)
-                .matchHeaderSnapshot({
-                    'content-version': anyContentVersion,
-                    etag: anyEtag,
-                    location: anyLocationFor('collections')
-                })
-                .matchBodySnapshot({
-                    collections: [buildMatcher(2)]
-                });
-
-            const kitchenSinkTagPosts = await agent
-                .get('/posts/?filter=tag:kitchen-sink');
-
-            assert.equal(automaticTagCollection.body.collections[0].posts.length, 2);
-            assert.equal(kitchenSinkTagPosts.body.posts.length, 2);
-
-            const collectionPostIds = automaticTagCollection.body.collections[0].posts.map(p => p.id);
-            const tagFilteredPosts = kitchenSinkTagPosts.body.posts.map(p => p.id);
-
-            assert.deepEqual(collectionPostIds, tagFilteredPosts);
-        });
     });
 });