Yep, sounds like a thirty day sentence.
Sounds like a joke by the late Redd Foxx:
"I was in Mexico for 3 months, doing 90 days. I got a $600 parking ticket. I parked on top of a Mexican. The judge said, 'You should have seen him, senor. He was standing in the road with his tamale wagon.' I said, 'Judge, I didn't even notice his fly was open'."