Do I need to leave Thailand by February 12 if my visa states 'admitted until' that date?

The user is concerned about overstaying their visa, which is valid until February 12, while their flight is scheduled for the morning of February 13. Responses suggest that if the departure is less than 24 hours after the visa expiration, fines are typically waived. However, continued intentions to visit Thailand may be affected by an overstay stamp. Options include changing the flight or managing check-in logistics, as passport control and check-in processes need to be considered.