Why isn't the last day of the month available in Create Release Version calendar?

Question

I'm looking at the Release->Create Version Calendar.

Today is the August 31, 2020. Today is a Monday.

Today does not exist in the calendar. Today cannot be typed in.

Tomorrow September 1st 2020 should be on a Tuesday

Affects the last day of every month (e.g. July31st, Sept 30).

Jeff Lever_xwjyrs · Answer

Were there any changes in the system settings or look and feel related to the Date?

I do use the Spoof Timezone Firefox extension to move myself into a more popular timezone. Largely for customer support reasons, though some privacy concerns as well

Thanks to this I dug into the extension further. It is configured to send a timezone offset of 240, in "America/New_York" Timezone. My actual Timezone is 180, in "America/Halifax"

Angélica Luz · Answer

Hello Jeff,

Welcome to Atlassian Community!

Testing on my local site, I wasn't able to replicate the same issue.

Are you still facing this issue?

Is it happening on a next-gen or classic project?

I'm not sure if the browser would affect something like this, but can you check if it happens using another one?

Were there any changes in the system settings or look and feel related to the Date?

Regards,
Angélica

robert.nadon · Answer

Interesting, I do not see the same thing, nor the same look.  When I go to create a release this is the view I get.    Do you have an add-ons?