How is the hotel day calculated?

when calculating the accommodation expenses of passengers, the usual rule is that one night is counted as one day from the time the passengers enter the store until 12 noon the next day, and the accommodation expenses of passengers are calculated according to this standard. This point has been controversial in practice.

Article 1 of the China Tourist Hotel Industry Code stipulates: "Hotel room charges are based on' room/night' (excluding hourly rooms). According to the guest staying for one' room/night', one day's room rate will be charged; If you check out after 12: and before 18: the next day, the hotel can add half a day's room charge; If you check out after 18: the next day, the hotel can add one day's room charge.