I heard it was every Tuesday. Excellent for people in Hua Hin or close by.
I was "bellyaching" about the unavailability of boosters here in Sakon Nakhon. I told my wife I'm going to drive to Hua Hin! (Great Place anytime!).
She walked into the room and said, they've got Pfeizer boosters until 12:00 PM.
I'll miss the beach but I'm really happy to get my fourth booster. I've had COVID once, I don't want to go through that again!