Time in AST and CST
The time difference between Atlantic Standard Time (AST) and China Standard Time (CST) is 12 hours. China Standard Time is 12 hours ahead of Atlantic Standard Time.
This means 9am AST is 9pm CST and 5pm AST is 5am CST (next day).
Atlantic Standard Time
- The current local time in AST is 2:50 pm (July 18, 2026)
- AST time zone offset is UTC-04:00
China Standard Time
- The current local time in CST is 6:50 pm (July 18, 2026)
- CST time zone offset is UTC+08:00
How to convert Atlantic Standard Time to China Standard Time?
Add 12 hours to Atlantic Standard Time to get China Standard Time.
Time in AST
00:00
Time in CST
00:00
Use the slider above to convert Atlantic Standard Time to China Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| AST | CST |
|---|---|
| 12am | 12pm |
| 1am | 1pm |
| 2am | 2pm |
| 3am | 3pm |
| 4am | 4pm |
| 5am | 5pm |
| 6am | 6pm |
| 7am | 7pm |
| 8am | 8pm |
| 9am | 9pm |
| 10am | 10pm |
| 11am | 11pm |
| 12pm | 12am |
| 1pm | 1am |
| 2pm | 2am |
| 3pm | 3am |
| 4pm | 4am |
| 5pm | 5am |
| 6pm | 6am |
| 7pm | 7am |
| 8pm | 8am |
| 9pm | 9am |
| 10pm | 10am |
| 11pm | 11am |