How get correct time show by all group posts. Set profile to right time my zone, but all posts show wrong time

Question

I rejoined same group under different name, set my profile for this new name to same time zone as I used for other name. All the group posts display the correct time for this other name. Don't know what is different between the two names.

Answer 1

go to My Account and change it there, too, which is located top of group or also on Messenger