Is it okay to visit the immigration office after my visa expires if they are closed on the expiration date?

The user is concerned about their visa expiring tomorrow and is unable to reach the immigration office today, which is necessary to renew their visa. They ask if it’s acceptable to go on Monday instead, considering the office will be closed on the expiration day. Comments advise that while the overstay fine may not be charged if the office is closed, an overstay stamp may still be issued. Additionally, it's recommended to visit the office today if possible, and if going on Monday, to arrive before 15:30 and have all required documentation ready.