Offset
The time difference between Hangzhou and Riyadh is 5 hours.
Hangzhou (CST) is ahead of Riyadh (AST).
CST: UTC+8
AST: UTC+3
Neither Hangzhou nor Riyadh is currently observing daylight saving time.
When to schedule
Business-hours overlap: 2 PM–5 PM in Hangzhou (9 AM–12 PM in Riyadh).
Both teams are in working hours during this window on weekdays.
Suggested time: 3:00 PM Hangzhou (10:00 AM Riyadh).
Note: the working week in Saudi Arabia runs Sunday–Thursday; Friday–Saturday is the weekend, so overlap on those days is limited.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
China
- New Year's DayThu, Jan 1
- Chinese New Year (Spring Festival)Tue, Feb 17
- Labour DayFri, May 1
- Dragon Boat FestivalFri, Jun 19
- Mid-Autumn FestivalFri, Sep 25
- National DayThu, Oct 1
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Hangzhou | Riyadh | Day |
|---|---|---|
| 12:00 am | 7:00 pm | -1 day |
| 1:00 am | 8:00 pm | -1 day |
| 2:00 am | 9:00 pm | -1 day |
| 3:00 am | 10:00 pm | -1 day |
| 4:00 am | 11:00 pm | -1 day |
| 5:00 am | 12:00 am | Same day |
| 6:00 am | 1:00 am | Same day |
| 7:00 am | 2:00 am | Same day |
| 8:00 am | 3:00 am | Same day |
| 9:00 am | 4:00 am | Same day |
| 10:00 am | 5:00 am | Same day |
| 11:00 am | 6:00 am | Same day |
| 12:00 pm | 7:00 am | Same day |
| 1:00 pm | 8:00 am | Same day |
| 2:00 pm | 9:00 am | Same day |
| 3:00 pm | 10:00 am | Same day |
| 4:00 pm | 11:00 am | Same day |
| 5:00 pm | 12:00 pm | Same day |
| 6:00 pm | 1:00 pm | Same day |
| 7:00 pm | 2:00 pm | Same day |
| 8:00 pm | 3:00 pm | Same day |
| 9:00 pm | 4:00 pm | Same day |
| 10:00 pm | 5:00 pm | Same day |
| 11:00 pm | 6:00 pm | Same day |
Daylight saving time
Neither Hangzhou nor Riyadh observes daylight saving time. The offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:58 AM
- Sunset
- 7:00 PM
- Day length
- 14h 2m
- Sunrise
- 5:04 AM
- Sunset
- 6:42 PM
- Day length
- 13h 37m
Daylight overlap: 8h 56m — 10:04 AM–7:00 PM in Hangzhou (5:04 AM–2:00 PM in Riyadh). Both locations are in daylight during this window.
Cities in these zones
Other cities in China Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in China Standard Time
- PVG
- SHA
- PEK
- PKX
- SZX
- CAN
- FUO
- CTU
- TFU
- TSN
Airports in Arabia Standard Time
- JED
- RUH
- MED
- DMM
Related conversions
Common conversions
- What is 9:00 am Hangzhou in Riyadh?
- 9:00 am Hangzhou is 4:00 am Riyadh.
- What is 12:00 pm Hangzhou in Riyadh?
- 12:00 pm Hangzhou is 7:00 am Riyadh.
- What is 12:30 pm Hangzhou in Riyadh?
- 12:30 pm Hangzhou is 7:30 am Riyadh.
- What is 2:00 pm Hangzhou in Riyadh?
- 2:00 pm Hangzhou is 9:00 am Riyadh.
- What is 5:00 pm Hangzhou in Riyadh?
- 5:00 pm Hangzhou is 12:00 pm Riyadh.
- What is 11:30 pm Hangzhou in Riyadh?
- 11:30 pm Hangzhou is 6:30 pm Riyadh.