Offset
The time difference between San José and Riyadh is 9 hours.
San José (CST) is behind Riyadh (AST).
CST: UTC-6
AST: UTC+3
Neither San José nor Riyadh is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in San José and Riyadh don't overlap on the same weekday. Riyadh is 9 hours ahead of San José.
With some flexibility, there’s a workable window outside standard hours:
- 7 AM–11 AM in San José (4 PM–8 PM in Riyadh) — suggest 9:00 AM San José (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.
Costa Rica
- New Year's DayThu, Jan 1
- Maundy ThursdayThu, Apr 2
- Good FridayFri, Apr 3
- Juan Santamaría DaySat, Apr 11
- Labour DayFri, May 1
- Annexation of the Party of Nicoya to Costa RicaSat, Jul 25
- Feast of Our Lady of the AngelsSun, Aug 2
- Mother's DaySat, Aug 15
- Independence DayTue, Sep 15
- Army Abolition DayTue, Dec 1
- Christmas DayFri, Dec 25
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| San José | Riyadh | Day |
|---|---|---|
| 12:00 am | 9:00 am | Same day |
| 1:00 am | 10:00 am | Same day |
| 2:00 am | 11:00 am | Same day |
| 3:00 am | 12:00 pm | Same day |
| 4:00 am | 1:00 pm | Same day |
| 5:00 am | 2:00 pm | Same day |
| 6:00 am | 3:00 pm | Same day |
| 7:00 am | 4:00 pm | Same day |
| 8:00 am | 5:00 pm | Same day |
| 9:00 am | 6:00 pm | Same day |
| 10:00 am | 7:00 pm | Same day |
| 11:00 am | 8:00 pm | Same day |
| 12:00 pm | 9:00 pm | Same day |
| 1:00 pm | 10:00 pm | Same day |
| 2:00 pm | 11:00 pm | Same day |
| 3:00 pm | 12:00 am | +1 day |
| 4:00 pm | 1:00 am | +1 day |
| 5:00 pm | 2:00 am | +1 day |
| 6:00 pm | 3:00 am | +1 day |
| 7:00 pm | 4:00 am | +1 day |
| 8:00 pm | 5:00 am | +1 day |
| 9:00 pm | 6:00 am | +1 day |
| 10:00 pm | 7:00 am | +1 day |
| 11:00 pm | 8:00 am | +1 day |
Daylight saving time
Neither San José 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
- 5:16 AM
- Sunset
- 5:57 PM
- Day length
- 12h 41m
- Sunrise
- 5:04 AM
- Sunset
- 6:42 PM
- Day length
- 13h 37m
Cities in these zones
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Central Standard Time
- SJO
- SYQ
Airports in Arabia Standard Time
- JED
- RUH
- MED
- DMM
Related conversions
Common conversions
- What is 9:00 am San José in Riyadh?
- 9:00 am San José is 6:00 pm Riyadh.
- What is 12:00 pm San José in Riyadh?
- 12:00 pm San José is 9:00 pm Riyadh.
- What is 12:30 pm San José in Riyadh?
- 12:30 pm San José is 9:30 pm Riyadh.
- What is 2:00 pm San José in Riyadh?
- 2:00 pm San José is 11:00 pm Riyadh.
- What is 5:00 pm San José in Riyadh?
- 5:00 pm San José is 2:00 am Riyadh, the next day.
- What is 11:30 pm San José in Riyadh?
- 11:30 pm San José is 8:30 am Riyadh, the next day.