This feature is still on the backlog.
-WarrenAbbas Sheikh commented
Hi MS Team,
Data/time format should be picked up from systems settings.
One my Mac, I am using 12Hr time format, but Team is showing 24Hr time format.
It is confusing and counter productive.
Kindly take this up on priority.
We know so many of our customers use Linux and we want Teams to be available for everyone. Stay tuned for more information soon.