Around-Christmas-Eve big street festival Tainan

Hi there! A couple years back I was in Tainan around Christmas Eve and got caught up in one of those massive street festivals with the brightly lit RGB trucks, drums, noise, parades, gods and bikini girls. I was made aware of it last year cause there were signs about impending road closures, but wasn’t in town when it happened.

Anyone know when that is happening this year? They don’t really advertise these things very well.