A forum member ASKED this question ...
But did not use his real name... post declined
But here's his question ❓ ❓ ❓
"On a METV, I have this stamp. If I extend it by 30 days do I get to the 1 March or the 2nd? Do they count 31st January as day 1?
Important as flight home is 2nd March.
Thank you."
Answered by PM
January 31 counts as Day #1
So he will have a One DAY Overstay as he is flying out of Thailand on March 2nd.
As it's ONLY ONE Day OVERSTAY...
Thai Immigration officer will refer him to another Immigration officer who will place an Overstay Stamp in his passport showing 1 Day OVERSTAY with the usual 500 Thai baht per day fine WAIVED.
UPDATED ANSWER .. having chatted with Mods...
It's possible that the 30 days is ADDED TO JANUARY 31ST...
WHICH means the news ending date will be March 2nd...
Therefore no overstay...no fine.
Either way...No Fine.
.