diff --git a/source/_talks/building-static-websites-sculpin.md b/source/_talks/building-static-websites-sculpin.md
index 2d76eb8d..99bc91b8 100644
--- a/source/_talks/building-static-websites-sculpin.md
+++ b/source/_talks/building-static-websites-sculpin.md
@@ -12,7 +12,7 @@ youtube:
     id: aN53arCKZAU
 events:
     - event: phpsw
-      date: '2015-10-14'
+      date: 2015-10-14
       joindin: https://joind.in/talk/view/15486
 ---
 [Sculpin][0] is a static site generator written in PHP. It converts Markdown files, Twig templates and standard HTML into a static HTML site that can be easily deployed.
diff --git a/source/_talks/configuring-all-the-things-drupal-8.md b/source/_talks/configuring-all-the-things-drupal-8.md
index c8b4af34..61d0bdca 100644
--- a/source/_talks/configuring-all-the-things-drupal-8.md
+++ b/source/_talks/configuring-all-the-things-drupal-8.md
@@ -10,6 +10,7 @@ tags:
     - drupal
     - drupal-8
 events:
-    - { event: drupal_bristol, date: '2018-07-25' }
+    - event: drupal_bristol
+      date: 2018-07-25
 ---
 A short notice talk on configuration management in Drupal 8, and things I’ve learned working on my current Drupal 8 project.
diff --git a/source/_talks/dancing-for-drupal.md b/source/_talks/dancing-for-drupal.md
index dfe4a7cb..c4339f2e 100644
--- a/source/_talks/dancing-for-drupal.md
+++ b/source/_talks/dancing-for-drupal.md
@@ -8,7 +8,7 @@ tags: [meetup, umbristol, drupal]
 tweets: yes
 events:
     - event: umbristol
-      date: '2015-08-25'
+      date: 2015-08-25
 ---
 As part of their [CMS Dance-Off][1], I was selected to speak about Drupal alongside other speakers representing Umbraco, Sitecore and Episerver.
 
diff --git a/source/_talks/deploying-drupal-fabric.md b/source/_talks/deploying-drupal-fabric.md
index a51abdde..1882c0ba 100644
--- a/source/_talks/deploying-drupal-fabric.md
+++ b/source/_talks/deploying-drupal-fabric.md
@@ -14,10 +14,10 @@ meta:
         type: website
 events:
     - event: drupalcamp_dublin_17
-      date: '2017-10-20'
+      date: 2017-10-20
       time: '15:00 - 15:40'
     - event: drupal_somerset
-      date: '2017-10-26'
+      date: 2017-10-26
 ---
 You’ve built your website, and now you just need to deploy it. There are various ways that this could be done - from (S)FTP, to SCP and rsync, to running commands like “git pull” and “composer install” directly on the server (not recommended).
 
diff --git a/source/_talks/deploying-php-ansible-ansistrano.md b/source/_talks/deploying-php-ansible-ansistrano.md
index c5365254..f87fb104 100644
--- a/source/_talks/deploying-php-ansible-ansistrano.md
+++ b/source/_talks/deploying-php-ansible-ansistrano.md
@@ -8,7 +8,7 @@ tags: [meetup, php, ansible, ansistrano]
 events:
     -
         event: drupal_bristol
-        date: '2019-01-23'
+        date: 2019-01-23
 ---
 Great! You’ve built your website, and now you just need to deploy it. There are various ways that this could be done - from (S)FTP, to SCP and rsync, to running commands like `git pull` and `composer install` directly on the server which is not ideal.
 
diff --git a/source/_talks/deploying-php-fabric.md b/source/_talks/deploying-php-fabric.md
index 9b5112ee..9839ff0b 100644
--- a/source/_talks/deploying-php-fabric.md
+++ b/source/_talks/deploying-php-fabric.md
@@ -17,14 +17,14 @@ meta:
             type: image/png
 events:
     - event: nomad_php
-      date: '2017-04-20'
+      date: 2017-04-20
       time: '19:00 (CET)'
       type: 'Lightning talk'
     - event: phpsw
-      date: '2017-09-13'
+      date: 2017-09-13
       joindin: https://joind.in/talk/a5ff3
     - event: phpnw_17
-      date: '2017-10-01'
+      date: 2017-10-01
       time: '09:00 - 09:45'
       joindin: https://joind.in/talk/4e35d
 ---
diff --git a/source/_talks/drupal-8-module-development.md b/source/_talks/drupal-8-module-development.md
index 8e829f8a..fbb2e730 100644
--- a/source/_talks/drupal-8-module-development.md
+++ b/source/_talks/drupal-8-module-development.md
@@ -19,7 +19,7 @@ meta:
             width: 960
 events:
     - event: drupalcamp_london_16
-      date: '2016-03-05'
+      date: 2016-03-05
 ---
 New to object-orientated PHP, Symfony or YAML, and want to get started building modules in Drupal 8? This is the session for you!
 
diff --git a/source/_talks/drupal-8-php-libraries-drupalorg-api.md b/source/_talks/drupal-8-php-libraries-drupalorg-api.md
index d7d64361..1fa156b0 100644
--- a/source/_talks/drupal-8-php-libraries-drupalorg-api.md
+++ b/source/_talks/drupal-8-php-libraries-drupalorg-api.md
@@ -12,10 +12,10 @@ youtube:
     id: JyDjC7gGDpU
 events:
     - event: drupal_bristol
-      date: '2018-04-18'
+      date: 2018-04-18
       joindin: https://joind.in/talk/14851
     - event: drupalcamp_london_19
-      date: '2019-03-01'
+      date: 2019-03-01
       fuzzy_date: true
 ---
 A demo of some of the open source projects that I’ve been working on lately that are based on information from the Drupal.org API, including a PHP library for the API itself as well as some Drupal 8 modules that use it.
diff --git a/source/_talks/drupal-8-rejoining-the-herd.md b/source/_talks/drupal-8-rejoining-the-herd.md
index 3b1ffafc..73993a1d 100644
--- a/source/_talks/drupal-8-rejoining-the-herd.md
+++ b/source/_talks/drupal-8-rejoining-the-herd.md
@@ -7,7 +7,7 @@ speakerdeck:
     url: https://speakerdeck.com/opdavies/drupal-rejoining-the-herd
 events:
     - event: php_south_coast_16
-      date: '2016-06-11'
+      date: 2016-06-11
       joindin: https://joind.in/talk/41d0f
 ---
 [Drupal 8][0] was (finally) released on November 19th 2015, after almost 4 years of work and code commits by over 3,200 different contributors. Whilst it’s pretty much the same as the Drupal that we know and, hopefully, love, a lot has changed behind the scenes and under the hood!
diff --git a/source/_talks/drupal-8.md b/source/_talks/drupal-8.md
index 21ed6e9b..1a587a61 100644
--- a/source/_talks/drupal-8.md
+++ b/source/_talks/drupal-8.md
@@ -10,7 +10,7 @@ tags: [meetup, phpsw, drupal, drupal-8]
 tweets: yes
 events:
     - event: phpsw
-      date: '2015-04-08'
+      date: 2015-04-08
 ---
 This was a ten minute lightning talk, designed to highlight the major changes coming in Drupal 8.
 
diff --git a/source/_talks/drupal-vm-generator.md b/source/_talks/drupal-vm-generator.md
index a58dc971..493bbf85 100644
--- a/source/_talks/drupal-vm-generator.md
+++ b/source/_talks/drupal-vm-generator.md
@@ -11,9 +11,9 @@ youtube:
     id: U1pbKAAO2Wo
 events:
     - event: nwdug
-      date: '2016-03-08'
+      date: 2016-03-08
     - event: drupal_bristol
-      date: '2016-04-02'
+      date: 2016-04-02
 ---
 An short talk about the [Drupal VM Generator][1] project.
 
diff --git a/source/_talks/drupal-vm-meet-symfony-console.md b/source/_talks/drupal-vm-meet-symfony-console.md
index d2e8862f..c0867387 100644
--- a/source/_talks/drupal-vm-meet-symfony-console.md
+++ b/source/_talks/drupal-vm-meet-symfony-console.md
@@ -8,7 +8,7 @@ speakerdeck:
 image: drupal-vm-meet-symfony-console.png
 events:
     - event: drupalcamp_bristol_16
-      date: '2016-07-23'
+      date: 2016-07-23
 ---
 _TL;DR - Come and learn about Symfony Console, with examples from a real-world project._
 
diff --git a/source/_talks/drupalorg-2015.md b/source/_talks/drupalorg-2015.md
index abafdfbc..0e34007e 100644
--- a/source/_talks/drupalorg-2015.md
+++ b/source/_talks/drupalorg-2015.md
@@ -7,8 +7,8 @@ speakerdeck:
     url: https://speakerdeck.com/opdavies/drupal-dot-org-in-15
 events:
     - event: drupalcamp_brighton_15
-      date: '2015-01-18'
+      date: 2015-01-18
     - event: drupalcamp_london_15
-      date: '2015-02-28'
+      date: 2015-02-28
 ---
 A retrospective of the Drupal Association’s work in 2014 and a look forward to what we’ll be working on in 2015.
diff --git a/source/_talks/drush-make-drupalbristol.md b/source/_talks/drush-make-drupalbristol.md
index 2c61f3e5..63e6a8b3 100644
--- a/source/_talks/drush-make-drupalbristol.md
+++ b/source/_talks/drush-make-drupalbristol.md
@@ -7,6 +7,6 @@ speakerdeck:
 tags: [meetup, drupal, drupal_bristol, drush, drush-make]
 events:
     - event: drupal_bristol
-      date: '2014-08-19'
+      date: 2014-08-19
 ---
 An introduction to Drush Make and how to use it to build reusable custom installation profiles or entire websites.
diff --git a/source/_talks/getting-your-data-into-drupal-8.md b/source/_talks/getting-your-data-into-drupal-8.md
index ead9df48..dd89dd13 100644
--- a/source/_talks/getting-your-data-into-drupal-8.md
+++ b/source/_talks/getting-your-data-into-drupal-8.md
@@ -20,9 +20,9 @@ meta:
 use: [talks]
 events:
     - event: drupal_bristol
-      date: '2017-01-18'
+      date: 2017-01-18
     - event: drupalcamp_london_17
-      date: '2017-03-04'
+      date: 2017-03-04
       time: '12:05 - 12:50'
 ---
 If you’ve moved a site from Drupal 6 to 7, the chances are that you’ve either used the upgrade path to update your old site in-place, or you built a new site from scratch and used the Migrate module from contrib to migrate your data from the old database.
diff --git a/source/_talks/git-flow.md b/source/_talks/git-flow.md
index a842354a..775480a0 100644
--- a/source/_talks/git-flow.md
+++ b/source/_talks/git-flow.md
@@ -10,6 +10,6 @@ tags: [conference, drupalcamp, drupalcamp-london, git, git-flow]
 tweets: yes
 events:
     - event: drupalcamp_london_14
-      date: '2014-03-01'
+      date: 2014-03-01
 ---
 An introduction to the Git Flow branching model and the git-flow plugin, and how I’ve used them to manage a Drupal development project.
diff --git a/source/_talks/goodbye-drush-make-hello-composer.md b/source/_talks/goodbye-drush-make-hello-composer.md
index 2a7b2504..a8f08bef 100644
--- a/source/_talks/goodbye-drush-make-hello-composer.md
+++ b/source/_talks/goodbye-drush-make-hello-composer.md
@@ -9,9 +9,9 @@ youtube:
     id: ZL2FtRTX9Y8
 events:
     - event: drupal_bristol
-      date: '2016-11-17'
+      date: 2016-11-17
     - event: php_uk_18
-      date: '2018-02-16'
+      date: 2018-02-16
       time: '14:40 - 15:40'
       joindin: https://joind.in/talk/650ab
 ---
diff --git a/source/_talks/it-all-started-with-a-patch.md b/source/_talks/it-all-started-with-a-patch.md
index 51e2a280..6f095a84 100644
--- a/source/_talks/it-all-started-with-a-patch.md
+++ b/source/_talks/it-all-started-with-a-patch.md
@@ -10,6 +10,6 @@ youtube:
     id: 5FYMRR61sdo
 events:
     - event: phpsw
-      date: '2017-02-08'
+      date: 2017-02-08
 ---
 A crash course of why and how to get involved with open source.
diff --git a/source/_talks/modern-drupal-development-with-composer.md b/source/_talks/modern-drupal-development-with-composer.md
index 6e12baef..2550dccd 100644
--- a/source/_talks/modern-drupal-development-with-composer.md
+++ b/source/_talks/modern-drupal-development-with-composer.md
@@ -10,7 +10,7 @@ youtube:
     id: Yi_FPI3xHwc
 events:
     - event: phpsw
-      date: '2016-11-09'
+      date: 2016-11-09
 ---
 Building a Drupal application? You no longer need to download archives to add new modules or update core, or deal with Drupal specific tools to manage your codebase.
 
diff --git a/source/_talks/so-what-is-this-drupal-thing.md b/source/_talks/so-what-is-this-drupal-thing.md
index 5509eb36..27089d3e 100644
--- a/source/_talks/so-what-is-this-drupal-thing.md
+++ b/source/_talks/so-what-is-this-drupal-thing.md
@@ -5,6 +5,6 @@ vimeo:
 tags: [meetup, drupal, unified-diff]
 events:
     - event: unified_diff
-      date: '2012-09-05'
+      date: 2012-09-05
 ---
 My very first talk, where I talk about Drupal, what it is and what it can do.
diff --git a/source/_talks/taking-flight-with-tailwind-css.md b/source/_talks/taking-flight-with-tailwind-css.md
index 82b95bc9..1419e51e 100644
--- a/source/_talks/taking-flight-with-tailwind-css.md
+++ b/source/_talks/taking-flight-with-tailwind-css.md
@@ -8,9 +8,9 @@ speakerdeck:
 tags: [css, tailwind, meetup]
 events:
     - event: drupal_bristol
-      date: '2018-01-17'
+      date: 2018-01-17
     - event: php_south_wales
-      date: '2018-07-31'
+      date: 2018-07-31
 meta:
     og:
         title: Taking Flight with Tailwind CSS
diff --git a/source/_talks/tdd-test-driven-drupal.md b/source/_talks/tdd-test-driven-drupal.md
index 219e95ff..84b7f482 100644
--- a/source/_talks/tdd-test-driven-drupal.md
+++ b/source/_talks/tdd-test-driven-drupal.md
@@ -21,20 +21,20 @@ meta:
 use: [talks]
 events:
     - event: drupalcamp_london_17
-      date: '2017-03-04'
+      date: 2017-03-04
       time: '16:15 - 17:00'
     - event: drupalcamp_dublin_17
-      date: '2017-10-21'
+      date: 2017-10-21
       time: '12:00 - 12:40'
     - event: drupal_bristol
-      date: '2017-11-22'
+      date: 2017-11-22
     - event: drupal_somerset
-      date: '2018-06-14'
+      date: 2018-06-14
     - event: drupal_dev_days_18
-      date: '2018-07-05'
+      date: 2018-07-05
       time: '12:15 - 13:00'
     - event: drupalcamp_london_19
-      date: '2019-03-01'
+      date: 2019-03-01
       fuzzy_date: true
 ---
 {% block content %}
diff --git a/source/_talks/test-drive-twig-with-sculpin.md b/source/_talks/test-drive-twig-with-sculpin.md
index d67e8507..6758c885 100644
--- a/source/_talks/test-drive-twig-with-sculpin.md
+++ b/source/_talks/test-drive-twig-with-sculpin.md
@@ -9,7 +9,7 @@ tags: [conference, drupalcamp, drupalcamp-north, sculpin, twig]
 tweets: yes
 events:
     - event: drupalcamp_north_15
-      date: '2015-07-25'
+      date: 2015-07-25
 ---
 [Sculpin][1] is a static site generator written in PHP, and based on [Symfony components][2]. It uses [YAML][3] and [Twig][4], which makes it very appealing to Drupal people wanting to learn these in preparation for Drupal 8.
 
diff --git a/source/_talks/2019-01-28-things-you-should-know-about-php.md b/source/_talks/things-you-should-know-about-php.md
similarity index 93%
rename from source/_talks/2019-01-28-things-you-should-know-about-php.md
rename to source/_talks/things-you-should-know-about-php.md
index de13d243..e7317342 100644
--- a/source/_talks/2019-01-28-things-you-should-know-about-php.md
+++ b/source/_talks/things-you-should-know-about-php.md
@@ -12,6 +12,6 @@ meta:
             url: /images/talks/things-you-should-know-about-php.png
 events:
     - event: ssdc
-      date: '2019-01-28'
+      date: 2019-01-28
 ---
 An introduction to PHP, presented to the Swansea Software Development Community (SSDC).
diff --git a/source/_talks/using-laravel-collections-outside-laravel.md b/source/_talks/using-laravel-collections-outside-laravel.md
index 4586c834..516137f5 100644
--- a/source/_talks/using-laravel-collections-outside-laravel.md
+++ b/source/_talks/using-laravel-collections-outside-laravel.md
@@ -10,9 +10,9 @@ tags: [nomad-php, lightning-talk, laravel, collections]
 type: Lightning talk
 events:
     - event: nomad_php
-      date: '2017-12-21'
+      date: 2017-12-21
       time: 19:00 CET
     - event: php_south_wales
-      date: '2018-08-28'
+      date: 2018-08-28
 ---
 Laravel Collections are a powerful object-orientated way of interacting with PHP arrays, but did you know that they can be used outside of Laravel, in any PHP project? This short talk shows how we can use Composer to include Laravel Collections within a non-Laravel project and put them to use within your own code.
diff --git a/source/talks.html.twig b/source/talks.html.twig
index 882081d4..e6d4ed8e 100644
--- a/source/talks.html.twig
+++ b/source/talks.html.twig
@@ -8,24 +8,24 @@ talks:
   - title: 'Drupal and the LDAP module'
     events:
       - event: swdug
-        date: '2013-07-10'
+        date: 2013-07-10
   - title: 'About the Drupal Association'
     events:
       - event: swdug
-        date: '2014-08-19'
+        date: 2014-08-19
 
   - title: 'Automated testing with Drupal 8 and PHPUnit'
     type: Workshop
     events:
       - event: drupal_bristol
-        date: '2018-06-27'
+        date: 2018-06-27
 
   - title: 'Episode #175 - Automated Testing'
     type: Podcast
     url: http://talkingdrupal.com/175
     events:
       - event: talking_drupal
-        date: '2018-09-05'
+        date: 2018-09-05
 ---
 {% block content %}
     <div class="markup mb-8">
diff --git a/src/TalksBundle/TwigExtension/TalksExtension.php b/src/TalksBundle/TwigExtension/TalksExtension.php
index b50f0e3e..1d1e290f 100644
--- a/src/TalksBundle/TwigExtension/TalksExtension.php
+++ b/src/TalksBundle/TwigExtension/TalksExtension.php
@@ -19,7 +19,7 @@ class TalksExtension extends Twig_Extension
         $this->today = (new \DateTime())
           ->modify('today')
           ->setTimezone(new \DateTimeZone('Europe/London'))
-          ->format('Y-m-d');
+          ->getTimestamp();
     }
 
     /**
diff --git a/tests/TalksBundle/TwigExtension/FormatTalksTest.php b/tests/TalksBundle/TwigExtension/FormatTalksTest.php
index bab18004..f4c1baae 100644
--- a/tests/TalksBundle/TwigExtension/FormatTalksTest.php
+++ b/tests/TalksBundle/TwigExtension/FormatTalksTest.php
@@ -42,14 +42,14 @@ class FormatTalksTest extends TestCase
             [
                 'title' => 'Talk A',
                 'events' => [
-                    ['event' => 'event-a', 'date' => '2018-01-01', 'time' => '09:00'],
-                    ['event' => 'event-b', 'date' => '2018-01-30', 'time' => '12:00'],
+                    ['event' => 'event-a', 'date' => strtotime('2018-01-01'), 'time' => '09:00'],
+                    ['event' => 'event-b', 'date' => strtotime('2018-01-30'), 'time' => '12:00'],
                 ],
             ],
             [
                 'title' => 'Talk B',
                 'events' => [
-                    ['event' => 'event-b', 'date' => '2018-01-31', 'time' => '17:00'],
+                    ['event' => 'event-b', 'date' => strtotime('2018-01-31'), 'time' => '17:00'],
                 ],
             ],
         ];
@@ -63,7 +63,7 @@ class FormatTalksTest extends TestCase
             $this->assertArrayHasKey('talk', $result);
 
             $this->assertEquals([
-                'date' => '2018-01-01',
+                'date' => '1514764800',
                 'event' => 'event-a',
                 'location' => 'Somewhere',
                 'name' => 'Event A',
@@ -79,7 +79,7 @@ class FormatTalksTest extends TestCase
             $this->assertArrayHasKey('talk', $result);
 
             $this->assertEquals([
-                'date' => '2018-01-30',
+                'date' => 1517270400,
                 'event' => 'event-b',
                 'location' => 'Somewhere else',
                 'name' => 'Event B',
@@ -98,9 +98,9 @@ class FormatTalksTest extends TestCase
     /** @test */
     public function get_all_events()
     {
-        $eventA = ['date' => (new DateTime('+1 week'))->format('Y-m-d')];
-        $eventB = ['date' => (new DateTime('-2 weeks'))->format('Y-m-d')];
-        $eventC = ['date' => (new DateTime('today'))->format('Y-m-d')];
+        $eventA = ['date' => (new DateTime('+1 week'))->getTimestamp()];
+        $eventB = ['date' => (new DateTime('-2 weeks'))->getTimestamp()];
+        $eventC = ['date' => (new DateTime('today'))->getTimestamp()];
 
         $talks = [
             ['events' => [$eventA, $eventB]],
@@ -121,11 +121,11 @@ class FormatTalksTest extends TestCase
     /** @test */
     public function get_upcoming_events()
     {
-        $eventA = ['date' => (new DateTime('+1 week'))->format('Y-m-d')];
-        $eventB = ['date' => (new DateTime('-2 weeks'))->format('Y-m-d')];
-        $eventC = ['date' => (new DateTime('today'))->format('Y-m-d')];
-        $eventD = ['date' => (new DateTime('+1 day'))->format('Y-m-d')];
-        $eventE = ['date' => (new DateTime('+2 weeks'))->format('Y-m-d')];
+        $eventA = ['date' => (new DateTime('+1 week'))->getTimestamp()];
+        $eventB = ['date' => (new DateTime('-2 weeks'))->getTimestamp()];
+        $eventC = ['date' => (new DateTime('today'))->getTimestamp()];
+        $eventD = ['date' => (new DateTime('+1 day'))->getTimestamp()];
+        $eventE = ['date' => (new DateTime('+2 weeks'))->getTimestamp()];
 
         $talks = [
             ['events' => [$eventA, $eventC]],
@@ -146,12 +146,12 @@ class FormatTalksTest extends TestCase
     /** @test */
     public function get_past_events()
     {
-        $eventA = ['date' => (new DateTime('+1 week'))->format('Y-m-d')];
-        $eventB = ['date' => (new DateTime('-2 weeks'))->format('Y-m-d')];
-        $eventC = ['date' => (new DateTime('today'))->format('Y-m-d')];
-        $eventD = ['date' => (new DateTime('+1 day'))->format('Y-m-d')];
-        $eventE = ['date' => (new DateTime('-2 days'))->format('Y-m-d')];
-        $eventF = ['date' => (new DateTime('-2 months'))->format('Y-m-d')];
+        $eventA = ['date' => (new DateTime('+1 week'))->getTimestamp()];
+        $eventB = ['date' => (new DateTime('-2 weeks'))->getTimestamp()];
+        $eventC = ['date' => (new DateTime('today'))->getTimestamp()];
+        $eventD = ['date' => (new DateTime('+1 day'))->getTimestamp()];
+        $eventE = ['date' => (new DateTime('-2 days'))->getTimestamp()];
+        $eventF = ['date' => (new DateTime('-2 months'))->getTimestamp()];
 
         $talks = [
             ['events' => [$eventD]],