The 22nd or 23rd. It depends on whether you leave before or after 20 o'clock. Travel codes are calculated from the day of departure, because the statistical rule of travel codes is that they will be recorded if they stay in this area for more than 4 hours, and the start of calculation 14 days will be eliminated after returning to a certain place for 4 hours. Leaving before 20: 00 on the 8th is eliminated on the 22nd, and leaving after 20: 00 on the 8th is eliminated on the 23rd.