Changshu keeps UTC+8 (CST) all year. There is no daylight saving time, so the clock never changes.
Changshu and your time
Changshu at a glance
| Country | China |
|---|---|
| Region | Jiangsu |
| Time zone | Asia/Shanghai |
| Abbreviation now | CST |
| UTC offset now | UTC+8 |
| Daylight saving time | Not observed since 1991 |
| Coordinates | 31.65° N, 120.74° E |
Changshu time zone and clock changes
Changshu follows the Asia/Shanghai time zone and stays on UTC+8 all year. Clocks here last changed for daylight saving time in 1991; the tz database lists no change after that.
Although China has 2 different offsets, Changshu keeps the same time as Beijing.
Clock changes in Changshu, 2026 and 2027
No clock changes are scheduled in Changshu for 2026 or 2027.
How far ahead or behind Changshu is
A 9:00 AM start in Changshu is 8:00 PM (previous day) in New York, 12:00 PM in Sydney and 5:00 PM (previous day) in Los Angeles.
| City | Time now | Difference now | In January | In July | Shared office hours |
|---|---|---|---|---|---|
| New York (United States) | --:-- | 13 h behind | 13 h behind | 12 h behind | None |
| Los Angeles (United States) | --:-- | 16 h behind | 16 h behind | 15 h behind | None |
| London (United Kingdom) | --:-- | 8 h behind | 8 h behind | 7 h behind | None |
| Paris (France) | --:-- | 7 h behind | 7 h behind | 6 h behind | 1 h |
| Dubai (United Arab Emirates) | --:-- | 4 h behind | 4 h behind | 4 h behind | 4 h |
| Mumbai (India) | --:-- | 2 h 30 min behind | 2 h 30 min behind | 2 h 30 min behind | 5 h 30 min |
| Singapore | --:-- | Same time | Same time | Same time | 8 h |
| Tokyo (Japan) | --:-- | 1 h ahead | 1 h ahead | 1 h ahead | 7 h |
| Sydney (Australia) | --:-- | 3 h ahead | 3 h ahead | 2 h ahead | 5 h |
| UTC | --:-- | 8 h behind | 8 h behind | 8 h behind | None |
Changshu never changes its clocks, but many of these cities do. Where the January and July columns disagree, the gap shifts when the other city moves to or from daylight saving time.
Shared office hours counts the time when the clock reads between 9 AM and 5 PM in both cities on the same day.
Daylight in Changshu
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
The earliest sunrise in Changshu is at 4:51 AM on June 11, and the latest sunset at 7:06 PM on June 30.
Daylight through the year in Changshu
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:01 AM | 6:08 PM | 12 h 7 min |
| June solstice | June 21 | 4:52 AM | 7:05 PM | 14 h 13 min |
| September equinox | September 23 | 5:46 AM | 5:53 PM | 12 h 7 min |
| December solstice | December 22 | 6:53 AM | 4:58 PM | 10 h 5 min |
When the sun is highest in Changshu
Clock time and sun time line up fairly well in Changshu: solar noon falls at about 11:55 AM on standard time.
Cities near Changshu
Every city below shares Changshu’s clock.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Zhangjiagang | 31 km (19 mi) | --:-- | Same time |
| Kunshan | 36 km (22 mi) | --:-- | Same time |
| Taicang | 40 km (25 mi) | --:-- | Same time |
| Suzhou | 41 km (25 mi) | --:-- | Same time |
| Wuxi | 44 km (27 mi) | --:-- | Same time |
| Nantong | 45 km (28 mi) | --:-- | Same time |
| Jiangyin | 54 km (34 mi) | --:-- | Same time |
| Changzhou | 76 km (47 mi) | --:-- | Same time |
More cities in China
All time zones and cities in China
Tools for time in Changshu
- Convert a time to or from Changshu: pick a date and time and see it in every city on your list.
- Add Changshu to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Changshu and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Changshu in?
Changshu uses the Asia/Shanghai time zone, which is UTC+8 (CST) all year.
Does Changshu use daylight saving time?
Not any more. Changshu last changed its clocks for daylight saving time in 1991 and now stays on UTC+8 all year.
What is the time difference between Changshu and New York?
Changshu is 13 hours ahead of New York in January and 12 hours ahead of New York in July, because New York moves its clocks for daylight saving time and Changshu does not.
Is Changshu on the same time as Beijing?
Yes. Changshu and Beijing both use UTC+8 right now.
How long is the longest day in Changshu?
About 14 hours 13 minutes, around the June solstice. The shortest day, around the December solstice, has about 10 hours 5 minutes of daylight.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.