Offset
The time difference between Phoenix and Riyadh is 10 hours.
Phoenix (MST) is behind Riyadh (AST).
MST: UTC-7
AST: UTC+3
Neither Phoenix nor Riyadh is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Phoenix and Riyadh don't overlap on the same weekday. Riyadh is 10 hours ahead of Phoenix.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–10 AM in Phoenix (5 PM–8 PM in Riyadh) — suggest 8:00 AM Phoenix (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.
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.
| Phoenix | 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
Neither Phoenix 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
- 5:19 AM
- Sunset
- 7:37 PM
- Day length
- 14h 18m
- Sunrise
- 5:04 AM
- Sunset
- 6:42 PM
- Day length
- 13h 37m
Daylight overlap: 33m — 7:04 PM–7:37 PM in Phoenix (5:04 AM–5:37 AM in Riyadh). Both locations are in daylight during this window.
Cities in these zones
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Mountain Standard Time
- AZA
- PHX
Airports in Arabia Standard Time
- JED
- RUH
- MED
- DMM
Related conversions
Common conversions
- What is 9:00 am Phoenix in Riyadh?
- 9:00 am Phoenix is 7:00 pm Riyadh.
- What is 12:00 pm Phoenix in Riyadh?
- 12:00 pm Phoenix is 10:00 pm Riyadh.
- What is 12:30 pm Phoenix in Riyadh?
- 12:30 pm Phoenix is 10:30 pm Riyadh.
- What is 2:00 pm Phoenix in Riyadh?
- 2:00 pm Phoenix is 12:00 am Riyadh, the next day.
- What is 5:00 pm Phoenix in Riyadh?
- 5:00 pm Phoenix is 3:00 am Riyadh, the next day.
- What is 11:30 pm Phoenix in Riyadh?
- 11:30 pm Phoenix is 9:30 am Riyadh, the next day.