Offset
The time difference between San Francisco and Riyadh is 10 hours.
San Francisco (PDT) is behind Riyadh (AST).
PDT: UTC-7
AST: UTC+3
San Francisco is currently observing daylight saving time; Riyadh is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in San Francisco and Riyadh don't overlap on the same weekday. Riyadh is 10 hours ahead of San Francisco.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–10 AM in San Francisco (5 PM–8 PM in Riyadh) — suggest 8:00 AM San Francisco (6:00 PM Riyadh).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
This window may shift by an hour during daylight saving time.
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.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
San Francisco uses Pacific Time (PST, or PDT). To call United States, dial +1.
Riyadh uses Arabia Standard Time (AST). To call Saudi Arabia, dial +966.
Riyadh is approximately 8,050 miles north of San Francisco.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| San Francisco | Riyadh | Day |
|---|---|---|
| 12:00 am | 10:00 am | Same day |
| 1:00 am | 11:00 am | Same day |
| 2:00 am | 12:00 pm | Same day |
| 3:00 am | 1:00 pm | Same day |
| 4:00 am | 2:00 pm | Same day |
| 5:00 am | 3:00 pm | Same day |
| 6:00 am | 4:00 pm | Same day |
| 7:00 am | 5:00 pm | Same day |
| 8:00 am | 6:00 pm | Same day |
| 9:00 am | 7:00 pm | Same day |
| 10:00 am | 8:00 pm | Same day |
| 11:00 am | 9:00 pm | Same day |
| 12:00 pm | 10:00 pm | Same day |
| 1:00 pm | 11:00 pm | Same day |
| 2:00 pm | 12:00 am | +1 day |
| 3:00 pm | 1:00 am | +1 day |
| 4:00 pm | 2:00 am | +1 day |
| 5:00 pm | 3:00 am | +1 day |
| 6:00 pm | 4:00 am | +1 day |
| 7:00 pm | 5:00 am | +1 day |
| 8:00 pm | 6:00 am | +1 day |
| 9:00 pm | 7:00 am | +1 day |
| 10:00 pm | 8:00 am | +1 day |
| 11:00 pm | 9:00 am | +1 day |
Daylight saving time
San Francisco observes daylight saving time; Riyadh does not. The offset between the two zones changes when San Francisco transitions: on Sunday, November 1, 2026, clocks fall back from PDT to PST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:49 AM
- Sunset
- 8:29 PM
- Day length
- 14h 39m
- Sunrise
- 5:05 AM
- Sunset
- 6:40 PM
- Day length
- 13h 36m
Daylight overlap: 1h 24m — 7:05 PM–8:29 PM in San Francisco (5:05 AM–6:29 AM in Riyadh). Both locations are in daylight during this window.
Cities in these zones
Other cities in Pacific Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Pacific Time
- BUR
- HHR
- LAX
- LGB
- SNA
- CLD
- SAN
- TIJ
- OAK
- SFO
Airports in Arabia Standard Time
- JED
- RUH
- MED
- DMM
Related conversions
Common conversions
- What is 9:00 am San Francisco in Riyadh?
- 9:00 am San Francisco is 7:00 pm Riyadh.
- What is 12:00 pm San Francisco in Riyadh?
- 12:00 pm San Francisco is 10:00 pm Riyadh.
- What is 12:30 pm San Francisco in Riyadh?
- 12:30 pm San Francisco is 10:30 pm Riyadh.
- What is 2:00 pm San Francisco in Riyadh?
- 2:00 pm San Francisco is 12:00 am Riyadh, the next day.
- What is 5:00 pm San Francisco in Riyadh?
- 5:00 pm San Francisco is 3:00 am Riyadh, the next day.
- What is 11:30 pm San Francisco in Riyadh?
- 11:30 pm San Francisco is 9:30 am Riyadh, the next day.