@Reuben Hochstetler Thanks! This seems to be a recent feature, including on the browser. For example, https://www.reddit.com/r/ProtonMail/comments/1eyj4zm/proton_calendar_poll_what_would_you_like_to_see/ has ‘More complex event frequency rules such as last Friday of the month etc.’ (https://www.reddit.com/r/ProtonMail/comments/1eyj4zm/comment/ljdhdpr/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button) as an official votable option set by ProtonMail themselves. Furthermore, I was in contact with PM in August directly, and they agreed this had not yet been possible.

So it seems to be a new feature, not yet announced afaict.

It is also not fully implemented to cover more complex event recurrence:
* for example Good Friday, which depends on Easter which in turn is movable;
* June solstice, which happens anywhere between 20 and 22 June depending on the year.

As for how to implement these more complicated occurrences, I gave one option two comments before your comment.

@Rueben Hochstetler Thank you for your comment. I had not seen this as I don't typically use browser interfaces.

This is already working exactly like you want. At least from the browser.

https://snipboard.io/9M7OW4.jpg

Also add the possibility to schedule first friday after the 6th of every month.

I firmly second this suggestion.

To add, for me it would also be useful to schedule around the spring/summer equinoxes and summer/winter soltices as they move around.

More generally: it is useful to set event recurrence to align with another already created/imported event. So if soltices were to have been imported, I could create a new event and choose from drop-down menu 'same as "summer soltice"'.

Well I didn't know it was possible in other calendar providers while I'd love such a feature. I already use similar schedules in Todoist

This is a basic feature of any useful calendar, and I'm amazed there's no UI for it.

Workaround:

Interestingly, it works if one imports an ICS file containing a recurring event such as "last day of the month". The description of such an event might not be accurate within Proton Calendar (e.g. it might say "every month on the 31st" even though it's actually "every month on the last day"), but it will schedule correctly. So as a labor-intensive workaround, one can:

• Export an ICS with the desired event from another app and import it into Proton Calendar.

...or...

• Export an ICS from Proton Calendar with a similar recurring event (e.g. monthly on the 31st), modify the recurrence rule for the event by manually editing the ICS file, then import it back into Proton Calendar.

For the tech masochists:

If you're manually editing an ICS file in a text editor (remember to use DOS newlines), you can change the target RRULE line as follows:

RRULE:FREQ=MONTHLY;BYMONTHDAY=-1

That's for the simple case of "last day of the month", repeating forever. See RFC 5545 § 3.8.5.3. Obviously, this isn't remotely practical, but someone might find it useful.

This is a core feature that makes the app less good in UI/UX sense than Google Calendar, etc. This is the #1 thing I want the most in an update from the dev team.

This seems to have been added. You can access it when you create a new event.

Please add this! I have events that occur on the 1st, 3rd, and 5th Saturdays of each month and this would help me switch to using Proton Calendar!

Until this gets fixed Proton Calendar is useless for me.
A shame, as I really would like to keep as much as I can within the Proton world.

This would be a very useful option. For me it is essential to be able to enter a recurring event on the very last day of each month, regardless of the day number (28, 29, 30 or 31). Unfortunately, this missing functionality prevents me from switching to Proton Calendar.

Yep this is really important! It would be a great improvement.

This is the main reason keeping me from switching to Proton Calendar.

I have a recurring meeting for every 3rd Sunday of the month

+1
I would need something like every week day, now I need to create 5 meetings that recur once per week... terrible ux tbh.

We also need a "fifth ... of the month" for events that only occur when there are five of that day in the month. For example, I have something that repeats every Thursday EXCEPT on fifth Thursdays, and something different on those days.

I created an event on the last day of December and set it to monthly recurring. It only appears on months with 31 days… This is not useful; an option to repeat on the last day of a month is a must.

The feature already exists for monthly recursive event but not for yearly. It would be useful for holidays as example (the automatic holiday calendar doesn't works well for Quebec and is also missing features)

I have examples of a need for scheduling recurring first and third Thursdays; and for the Thursday after the third Tuesday (not the same as the third Thursday).

Same as https://protonmail.uservoice.com/forums/932842-proton-calendar/suggestions/42699389-last-day-of-the-month ...would be great to port over the votes and close this duplicate.

Not sure if this is reviewed at all, because I don't see any feedback from the developers in any ticket.