The calculation does not consider the actual time of arrival but starts counting from
midnight the next day.
For Example:
- Arrival: You arrive in Beijing at 2:00 PM on Jan 1, 2025.
- Start of 240-hour period: The clock starts at 12:00 AM on Jan 2, 2025.
- End of 240-hour period: You must leave by 11 PM on Jan 11, 2025.