diff --git a/_data/bmslab_events.yaml b/_data/bmslab_events.yaml
index 8a6c9f420b..f31ca56ae5 100644
--- a/_data/bmslab_events.yaml
+++ b/_data/bmslab_events.yaml
@@ -6,8 +6,8 @@
   url: https://www.utwente.nl/en/bmslab/news-and-events/events/2023/10/1129207/bachelor-open-day-on-campus
   img_url: https://utwente.nl/.uc/i9a5c5717010201c8ca015397f0022918fb0db3f196e60701c3a401ee0080/data.jpg
   date: 2023-10-13
-  start: 2023-10-13T00:00:00+02:00
-  end: 2023-10-14T23:59:00+02:00
+  start: 2023-10-13T00:00:00+00:00
+  end: 2023-10-14T23:59:00+00:00
   endDate: 2023-10-14
 - title: Inspire and Interact event
   description: THE BMS LAB and Interaction Lab INVITE YOU TO JOIN OUR AUTUMN
@@ -16,7 +16,7 @@
   url: https://www.utwente.nl/en/bmslab/news-and-events/events/2023/10/1131682/inspire-and-interact-event
   img_url: https://utwente.nl/.uc/i1f888ae001026684cc01f353f002a09a3e657550179a0701c3a401ee0080/data.png
   date: 2023-10-26
-  start: 2023-10-26T14:00:00+02:00
-  end: 2023-10-26T17:00:00+02:00
+  start: 2023-10-26T14:00:00+00:00
+  end: 2023-10-26T17:00:00+00:00
   endDate: 2023-10-26
   time: 14:00 - 17:00
diff --git a/_data/calendar.yaml b/_data/calendar.yaml
index 086cf6fa4d..efbef6b54a 100644
--- a/_data/calendar.yaml
+++ b/_data/calendar.yaml
@@ -1,56 +1,56 @@
 - title: BDSi Open Hour
   location: Ravelijn 1438
-  start: 2023-10-09T15:00:00+02:00
-  end: 2023-10-09T16:00:00+02:00
+  start: 2023-10-09T15:00:00+00:00
+  end: 2023-10-09T16:00:00+00:00
   date: 2023-10-09
   endDate: 2023-10-09
   time: 15:00 - 16:00
 - title: BDSi Open Hour
   location: Ravelijn 1438
-  start: 2023-10-16T15:00:00+02:00
-  end: 2023-10-16T16:00:00+02:00
+  start: 2023-10-16T15:00:00+00:00
+  end: 2023-10-16T16:00:00+00:00
   date: 2023-10-16
   endDate: 2023-10-16
   time: 15:00 - 16:00
 - title: BDSi Open Hour
   location: Ravelijn 1438
-  start: 2023-10-23T15:00:00+02:00
-  end: 2023-10-23T16:00:00+02:00
+  start: 2023-10-23T15:00:00+00:00
+  end: 2023-10-23T16:00:00+00:00
   date: 2023-10-23
   endDate: 2023-10-23
   time: 15:00 - 16:00
 - title: BDSi Open Hour
   location: Ravelijn 1438
-  start: 2023-10-30T15:00:00+01:00
-  end: 2023-10-30T16:00:00+01:00
+  start: 2023-10-30T15:00:00+00:00
+  end: 2023-10-30T16:00:00+00:00
   date: 2023-10-30
   endDate: 2023-10-30
   time: 15:00 - 16:00
 - title: BDSi Intensive Longitudinal Data community
   location: RA1444
-  start: 2023-10-17T15:30:00+02:00
-  end: 2023-10-17T16:30:00+02:00
+  start: 2023-10-17T15:30:00+00:00
+  end: 2023-10-17T16:30:00+00:00
   date: 2023-10-17
   endDate: 2023-10-17
   time: 15:30 - 16:30
 - title: Network Science Community
   location: Ravelijn-Room-RA1444 (Situation Room)
-  start: 2023-10-17T16:30:00+02:00
-  end: 2023-10-17T17:00:00+02:00
+  start: 2023-10-17T16:30:00+00:00
+  end: 2023-10-17T17:00:00+00:00
   date: 2023-10-17
   endDate: 2023-10-17
   time: 16:30 - 17:00
 - title: Causal Community - Data Set Challenge
   location: Ravelijn-Room-RA1444 (Situation Room)
-  start: 2023-10-24T16:00:00+02:00
-  end: 2023-10-24T17:00:00+02:00
+  start: 2023-10-24T16:00:00+00:00
+  end: 2023-10-24T17:00:00+00:00
   date: 2023-10-24
   endDate: 2023-10-24
   time: 16:00 - 17:00
 - title: Text Analysis Community
   location: Ravelijn-Room-RA1444 (Situation Room)
-  start: 2023-10-31T16:00:00+01:00
-  end: 2023-10-31T17:30:00+01:00
+  start: 2023-10-31T16:00:00+00:00
+  end: 2023-10-31T17:30:00+00:00
   date: 2023-10-31
   endDate: 2023-10-31
   time: 16:00 - 17:30