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#1827 - Calendar events with an advanced recurrence pattern do not display properly after DST changes

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By Guest posted
Automated response: DST shift calculation for recurring events

There is a bug in the DST shift calculations regarding events that can cause day shifting inadvertently.

By Guest posted
Ok, trying to fix this blew my mind, but I'm confident I finally got the correct fix.

It's really confusing because there are MULTIPLE DST shifts. So for example, a New York event may be 5pm UTC at start of March, 4pm UTC mid-way through March (as event's timezone's DST shifted) -- while in New York it stays at 1pm -- while in say London it is 5pm at start of March, 4pm mid-way through March, then back to 5pm in April (because the latter London DST kicked in, to pair up with the earlier New York DST).

Trying to trace timestamps through all the correct conversions when all these little shifts are happening is more than human working memory can hold ;-).

By Guest posted
Oh I bet, but I commend you for your hard work to try and get this working.
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