ENV: Support events that are fixed in local time

[bsipocz]

For example the Sunpy meeting is always on Wed 5PM British time, no matter if it's daylight savings or not.

IMO we don't have a way to support this atm.

[rkdarst]

I'm not sure how this maps to upstream yaml2ics (I started with it, I think this is somehow directly supported but I'm not sure): we can use timezones like Europe/Helsinki. From a quick look at our copy of yaml2ics, it seems it can be given in a sigle event. I'm not entirely sure about it handling summer itme, but I think it's worked without a problem for our weekly team meeting at 15:00 Europe/Helsinki between summer and winter):

https://github.com/coderefinery/calendar/blob/main/calendars/team.yaml#L5-L10 (see line 5 and then line 10)

I can dig more if it helps.

[bsipocz]

We do know about a couple of bugs about handling time zones, so maybe you are right and this could be simply handled, out of the box with a city based time zone, we just need to make sure those other bugs are fixed first.

[stefanv]

I think your options are to pick a timezone that does not change over the year, such as UTC or British Summer Time. We recently fixed issues where timezones were not applied correctly.