Can I ask for an extension of check-out time when I check into the hotel at midnight?

If you stay in the hotel at midnight, you can't ask for an extension of check-out time. Until noon the next day 12.

According to the regulations: 1 day is calculated from noon 12 to noon 12 the next day, and half a day is calculated from noon 12 to 18:00. Even after 18:00, hotels mainly sell overnight rooms.

Check-in in the early morning is the same as check-in at noon 12, which is 1 day until noon 12. Because I only stayed in this room for one night, whether I checked in after noon 12 or in the early morning, it was 1 night.