I find different dates online either 24 or 25 November. Is 24 November the correct date for Bangkok?

The actually date will be the full moon, 24th. As always, to maximize tourist baht, the time of events aren't set. Keep an eye / ear to the local news in your area.

CM for instance will probably stretch it out for 3 days. Muang Udon was always just the one day, when we lived there, same with Muang Prachuap now.

Unless it falls on weekend, then folks might be available to spend a few more baht, having off work and or school.

Edited 4 hours ago4 hr by KhunLA

I'll be playing it safe and will avoid going out on both days.

My b/f & I will be arriving in Bangers on the 22nd from Surin, and 2 friends from Melbin & Canbella arriving on the 24th p.m. on separate flights.

I'm assuming we'll do a nice walk around Benjakitti Park in the early evening of that day. But plenty to keep us engaged for the following 2 weeks before return here.