Offset
The time difference between Riyadh and Portland is 10 hours.
Riyadh (AST) is ahead of Portland (PDT).
AST: UTC+3
PDT: UTC-7
Portland is currently observing daylight saving time; Riyadh is not.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Riyadh and Portland don't overlap on the same weekday. Portland is 10 hours behind Riyadh.
With some flexibility, there’s a workable window outside standard hours:
- 5 PM–8 PM in Riyadh (7 AM–10 AM in Portland) — suggest 6:00 PM Riyadh (8:00 AM Portland).
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
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Riyadh | Portland | Day |
|---|---|---|
| 12:00 am | 2:00 pm | -1 day |
| 1:00 am | 3:00 pm | -1 day |
| 2:00 am | 4:00 pm | -1 day |
| 3:00 am | 5:00 pm | -1 day |
| 4:00 am | 6:00 pm | -1 day |
| 5:00 am | 7:00 pm | -1 day |
| 6:00 am | 8:00 pm | -1 day |
| 7:00 am | 9:00 pm | -1 day |
| 8:00 am | 10:00 pm | -1 day |
| 9:00 am | 11:00 pm | -1 day |
| 10:00 am | 12:00 am | Same day |
| 11:00 am | 1:00 am | Same day |
| 12:00 pm | 2:00 am | Same day |
| 1:00 pm | 3:00 am | Same day |
| 2:00 pm | 4:00 am | Same day |
| 3:00 pm | 5:00 am | Same day |
| 4:00 pm | 6:00 am | Same day |
| 5:00 pm | 7:00 am | Same day |
| 6:00 pm | 8:00 am | Same day |
| 7:00 pm | 9:00 am | Same day |
| 8:00 pm | 10:00 am | Same day |
| 9:00 pm | 11:00 am | Same day |
| 10:00 pm | 12:00 pm | Same day |
| 11:00 pm | 1:00 pm | Same day |
Daylight saving time
Portland observes daylight saving time; Riyadh does not. The offset between the two zones changes when Portland 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
- 5:04 AM
- Sunset
- 6:42 PM
- Day length
- 13h 37m
- Sunrise
- 5:24 AM
- Sunset
- 8:57 PM
- Day length
- 15h 34m
Daylight overlap: 1h 53m — 5:04 AM–6:57 AM in Riyadh (7:04 PM–8:57 PM in Portland). 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 Arabia Standard Time
- JED
- RUH
- MED
- DMM
Airports in Pacific Time
- BUR
- HHR
- LAX
- LGB
- SNA
- CLD
- SAN
- TIJ
- OAK
- SFO
Related conversions
Common conversions
- What is 9:00 am Riyadh in Portland?
- 9:00 am Riyadh is 11:00 pm Portland, the previous day.
- What is 12:00 pm Riyadh in Portland?
- 12:00 pm Riyadh is 2:00 am Portland.
- What is 12:30 pm Riyadh in Portland?
- 12:30 pm Riyadh is 2:30 am Portland.
- What is 2:00 pm Riyadh in Portland?
- 2:00 pm Riyadh is 4:00 am Portland.
- What is 5:00 pm Riyadh in Portland?
- 5:00 pm Riyadh is 7:00 am Portland.
- What is 11:30 pm Riyadh in Portland?
- 11:30 pm Riyadh is 1:30 pm Portland.