@Kghbln:
When this template is used with a date that is not a Tuesday, the result is confusing.
For examples where the template is used with a date that is a Monday see
Topic on Template talk:WMFReleasePage
I am strictly following the roadmap date, e.g. https://www.mediawiki.org/wiki/MediaWiki_1.37/Roadmap. If the date is not a Tuesday I cannot do anything about that. What we however can do is fixing the template.
Fixed, hopefully.
Thanks for your prompt response and action. If you still want to display the weekday, maybe the following format can be used. I am not sure if it works for all languages though.
{{#time:l, j F Y|2021-05-24}} → Monday, 24 May 2021
I did not do this since I was not absolutely sure about the lang parameter. It is working though. Done.