What is the last day of my COVID extension in Thailand after I receive the new stamp on February 25th?

I did a covid extension on january 28th. I just picked up my passport with under consideration stamp until February 25th. after i go to get the new stamp on February 25, what will be the last day of my extension? I would like to book the flight without going overstay.

I just asked to the lady outside immigration who hand over the passports and also to the young lady at the entrance. they said I don't know, not sure.

I dont understand the pattern here, in my previous covid extension i got 29 days for the under considration stamp (29nov-27dec) and 33 days for the extension (27dec-28jan).