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Confluence Team Calendars - Time Zone Offsets Bugs

Jiri Pik

I have selected in my Team Calendar the timezone to be Europe / Zurich.

1. Offset Definition Wrong

For some reason, it's defined as Europe/Zurich(+0200) - not sure what offset it's considering but it should be +0100 and then summer time +0100.

2. Import of the calendar into Outlook

More fundamentally, when I import the calendar into Outlook, all the times are PLUS 2 hours, so if the Team Calendar shows 0900, Outlook shows 1100.

This is actually bug in the calendar exposed -> since when I export the calendar to an ICS file, i can see the wrong times.

DTSTART;TZID=Europe/Zurich:20190901T110000
DTEND;TZID=Europe/Zurich:20190901T120000

Accepted answers

Diego_88dj6o

Hello there Jiri!
I was checking the current GMT Offset for Zurich, and I found the information here in TimeZoneDB:

Time Zone - Europe/Zurich

Currently, it shows us that the GMT Offset is indeed +0200. The Daylight Saving started March 31, according to Greenwich Mean Time:

Greenwich Mean Time - Zurich

What is happening with the events in your calendar is that they are created based on Your Current User timezone. For example:

I login with a user locate at GMT-3
I create an event at 9AM in a calendar located in GMT+2
It will show as 9AM for me and 2PM for users in GMT+2 and the Calendar itself
An user in GMT+3 will see the event at 3PM

The result will be an even that, for me a GMT-3 user, will be placed at 9AM. For other users at GMT+2, this will be shown at 2PM.
Since the calendar shows event timing based on the user location, we need to take in consideration the offset when creating events.

Outlook is actually showing the correct date for the event. For the calendar itself, the timezone is GMT+2. If you need to schedule events based on Zurich (GMT+2), we need to change the user location to the compatible one, which is GMT+1, the same as Amsterdam and Berlin.

Short explanation:

The event displays and is created in Team Calendars taking in consideration the user Timezone.

The calendar stores the event based on its own internal timezone.

If we need to set something for 9AM GMT+2 and we can not change the user from GMT-3 we need to create an event 5 hours before 9AM, at 4AM.

Let us know if this helps you out Jiri! Looking forward to your reply.

All comments

Diego_88dj6o

Hello there Jiri!
I was checking the current GMT Offset for Zurich, and I found the information here in TimeZoneDB:

Time Zone - Europe/Zurich

Currently, it shows us that the GMT Offset is indeed +0200. The Daylight Saving started March 31, according to Greenwich Mean Time:

Greenwich Mean Time - Zurich

What is happening with the events in your calendar is that they are created based on Your Current User timezone. For example:

I login with a user locate at GMT-3
I create an event at 9AM in a calendar located in GMT+2
It will show as 9AM for me and 2PM for users in GMT+2 and the Calendar itself
An user in GMT+3 will see the event at 3PM

Short explanation:

The event displays and is created in Team Calendars taking in consideration the user Timezone.

The calendar stores the event based on its own internal timezone.

If we need to set something for 9AM GMT+2 and we can not change the user from GMT-3 we need to create an event 5 hours before 9AM, at 4AM.

Let us know if this helps you out Jiri! Looking forward to your reply.

Jiri Pik

The entire concept of calendar timezones where you show Europe/Zurich +2 hour is misleading since the label +2 hours is including the summer time. You should include the label that summer time is inclusive.

I understand there multiple timezones values in play but do believe they are not processed intuitively.

Diego:

could you please advise how to set up the calendar and an event as follows:

1. An event takes place every week at 0900 Zurich time regardless of summer time

2. I want the event to propagate to Outlook at 0900 Zurich time via the shared ics calendar

Diego_88dj6o

Hello Jiri!

I surely can. I will explain the procedure assuming that your GMT is actually GMT-1:

Create a calendar that has Zurich Time zone (The same as Berlin), which is currently GMT+2

Create the event with your user (who is GMT-1)

Set the event to start at 6AM for the user (the one who is GMT-1 and is interacting with the calendar

Internally, Team Calendars will set this event as 9AM for GMT+2

Here is a screenshot of what it actually looks like in World Time Buddy:

Screen Shot 2019-06-28 at 15.47.17.png

You can change GMT-1 for you actual time zone in World Time buddy and you should be able to sync both your time zone and Zurich's.

Let us know your thoughts Jiri!

Jiri Pik

Diego:

thank you for your kind help.

Let's proceed a step by step.

For the start, I am creating a recurring task for myself. How to set up the Confluence's calendar and the event so that?

1. An event takes place every week at 0900 Zurich time regardless of summer time

2. I want the event to propagate to Outlook at 0900 Zurich time via the shared ics calendar

In other words, let me repeat a simple example. I live in Zurich. My browser's timezone is Zurich, Switzerland. My Confluence's Calendar's time zone is Zurich, +2 hours. I created a recurring event which started in June 2019 and is happening every week on Sunday at 0900. For unknown reasons, this event is scheduled in December 2019 (no summer time!) to start at 10:00 in my own Calendar!!!

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