12306 can I log in and book tickets 24 hours a day, or is there a time limit?

12306 website provides information inquiry service all day, and ticket purchase service is provided from 6: 00 to 23: 00 every day. On the website of 12306, you can buy four kinds of direct tickets with different trains and seats for adults, children, students and disabled soldiers (including disabled people's police) sold by the railway ticket system.

Please purchase tickets, change tickets and refund tickets at 12306 website no later than 25 minutes before driving; Please go to the ticket window of the station within 25 minutes before driving. Please handle the "arrival change" business on 12306 website no later than 48 hours before driving.

Extended data

After purchasing tickets on 12306 website, please exchange paper tickets after purchasing tickets and before driving, and then enter the station.

1, use the resident ID card to buy tickets, but you don't have the conditions to use the resident ID card to check tickets when you get on or off the station.

2. Use the resident ID card to purchase tickets, but you can't show the original resident ID card when you check in, or you can't read the resident ID card on the automatic ticket checking machine.

3. Use other valid identity documents other than resident identity cards to purchase tickets. ?

4. Use the valid ID information of peers to purchase children's tickets. ?

5. Buy student tickets and disabled soldiers tickets.

6. According to the date of bus ticket and the number of stops.

China Railway Customer Service Center-Online Ticket Purchase and Exchange