Calendar weeks do not match unicode week numbers

[jimcasey]

Hello!

I use a custom date format (yyyy.ww) to show the year/week of the year in the toolbar, and then have the Show calendar weeks option checked in settings:

It appears the weeks listed in the calendar are not aligned with the value displayed in the titlebar – notice in the screenshot here, it is currently week 4 in the titlebar but week 3 in the calendar:

I realize that there are competing standards – for example, the calendar follows F.4 of the Unicode standard linked in the docs, while the titlebar calculation follows the "1/1 is always week 1" rule, which is the same as Outlook (and my organization, and thus my preference 😄).

Any thoughts on what it might take to make this consistent?

[sfsam]

Thanks for posting this issue. I wrote about it here: https://twitter.com/mowgliiapps/status/1347305213397327873?s=21
Basically, you can set the macos calendar to use the ISO standard.

[djeikyb]

There's also a nice help page!

To save a click, itsycal does not support the gregorian calendar. Only the iso 8601 standard is supported. But macs configured for the USA default to the gregorian calendar. There are subtle differences, and week year number is one of them.