About immigration in Ubon Ratchathani (with their office in the very small town of Phibun).

Does anybody know when they close on Fridays ?

I ask because immigration in Kanchanaburi, at least used to, close much earlier on Fridays and I once got an overstay because of this special Friday closing time - very irritating.

Don't know but you can apply for extension earlier.

You do not loose any days, the extension starts from the last day of your entry stamp.

Give them a call on 045441108 and ask.