CST-CHINA to JST time conversion
JST is 1 hour ahead of CST-CHINA.
Time difference with your location
CST-CHINA is 8 hours ahead of UTC. Compare with your local time →
Choose a date and time
Choose the local time in CST-CHINA to convert it to JST on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · CST-CHINA → JST
This table converts each hour in CST-CHINA to JST on 2026-10-22.
- Working hours
- Outside working hours
- Night hours
| CST-CHINA | JST | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 01:001:00 AM | |
| 01:001:00 AM | 02:002:00 AM | |
| 02:002:00 AM | 03:003:00 AM | |
| 03:003:00 AM | 04:004:00 AM | |
| 04:004:00 AM | 05:005:00 AM | |
| 05:005:00 AM | 06:006:00 AM | |
| 06:006:00 AM | 07:007:00 AM | |
| 07:007:00 AM | 08:008:00 AM | |
| 08:008:00 AM | 09:009:00 AM | ✓ |
| 09:009:00 AM | 10:0010:00 AM | ✓ |
| 10:0010:00 AM | 11:0011:00 AM | ✓ |
| 11:0011:00 AM | 12:0012:00 PM | ✓ |
| 12:0012:00 PM | 13:001:00 PM | ✓ |
| 13:001:00 PM | 14:002:00 PM | ✓ |
| 14:002:00 PM | 15:003:00 PM | ✓ |
| 15:003:00 PM | 16:004:00 PM | ✓ |
| 16:004:00 PM | 17:005:00 PM | ✓ |
| 17:005:00 PM | 18:006:00 PM | |
| 18:006:00 PM | 19:007:00 PM | |
| 19:007:00 PM | 20:008:00 PM | |
| 20:008:00 PM | 21:009:00 PM | |
| 21:009:00 PM | 22:0010:00 PM | |
| 22:0010:00 PM | 23:0011:00 PM | |
| 23:0011:00 PM | 00:0012:00 AM +1 day |
Quick conversion examples
These examples use CST-CHINA (UTC+8) and JST (UTC+9); choosing a date applies the local clock changes.
Conversion formula: JST = CST-CHINA + 1h · CST + 1h.
| CST-CHINA | JST |
|---|---|
| 6:00 AM CST-CHINA | = 7:00 AM JST |
| 7:00 AM CST-CHINA | = 8:00 AM JST |
| 8:00 AM CST-CHINA | = 9:00 AM JST |
| 9:00 AM CST-CHINA | = 10:00 AM JST |
| 10:00 AM CST-CHINA | = 11:00 AM JST |
| 12:00 PM CST-CHINA | = 1:00 PM JST |
| 3:00 PM CST-CHINA | = 4:00 PM JST |
| 5:00 PM CST-CHINA | = 6:00 PM JST |
| 6:00 PM CST-CHINA | = 7:00 PM JST |
| 8:00 PM CST-CHINA | = 9:00 PM JST |
Overlapping meeting hours
The 08:00–18:00 working day in CST-CHINA and JST overlaps for 9 hours on 2026-10-22.
- Shared working hours
- 08:00–17:00 CST-CHINA · 09:00–18:00 JST
Clock changes on both sides, 2026–2028
CST-CHINA and JST have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | CST-CHINA | JST |
|---|---|---|
| 2026 | No clock changes; UTC+8 all year. | No clock changes; UTC+9 all year. |
| 2027 | No clock changes; UTC+8 all year. | No clock changes; UTC+9 all year. |
| 2028 | No clock changes; UTC+8 all year. | No clock changes; UTC+9 all year. |
The difference between CST-CHINA and JST stays constant throughout 2026–2028: JST is 1 hour ahead of CST.
Frequently asked questions
What time is 9 AM CST-CHINA in JST?
9:00 AM CST-CHINA = 10:00 AM JST, using UTC+8 and UTC+9. Choose a date above for the seasonal local time.
Does the time difference between CST-CHINA and JST change during the year?
No. Throughout 2026–2028: JST is 1 hour ahead of CST-CHINA.
How do I tell whether it is day or night in JST?
Read the JST clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between CST-CHINA and JST?
The shared 08:00–18:00 working window is 08:00–17:00 CST / 09:00–18:00 JST, a total of 9 hours.
What is the time difference between CST-CHINA and JST now?
Right now, JST is 1 hour ahead of CST. Conversion formula: JST = CST-CHINA + 1h · CST + 1h.