Offset
The time difference between Nairobi and San José is 9 hours.
Nairobi (EAT) is ahead of San José (CST).
EAT: UTC+3
CST: UTC-6
Neither Nairobi nor San José is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Nairobi and San José don't overlap on the same weekday. San José is 9 hours behind Nairobi.
With some flexibility, there’s a workable window outside standard hours:
- 4 PM–8 PM in Nairobi (7 AM–11 AM in San José) — suggest 6:00 PM Nairobi (9:00 AM San José).
This means an early start or late finish for one side, but it’s a reasonable slot for a one-off meeting.
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.
Kenya
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Labour DayFri, May 1
- Madaraka DayMon, Jun 1
- Mazingira DaySat, Oct 10
- Mashujaa DayTue, Oct 20
- Jamhuri DaySat, Dec 12
- Christmas DayFri, Dec 25
- Boxing DaySat, Dec 26
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.
| Nairobi | San José | Day |
|---|---|---|
| 12:00 am | 3:00 pm | -1 day |
| 1:00 am | 4:00 pm | -1 day |
| 2:00 am | 5:00 pm | -1 day |
| 3:00 am | 6:00 pm | -1 day |
| 4:00 am | 7:00 pm | -1 day |
| 5:00 am | 8:00 pm | -1 day |
| 6:00 am | 9:00 pm | -1 day |
| 7:00 am | 10:00 pm | -1 day |
| 8:00 am | 11:00 pm | -1 day |
| 9:00 am | 12:00 am | Same day |
| 10:00 am | 1:00 am | Same day |
| 11:00 am | 2:00 am | Same day |
| 12:00 pm | 3:00 am | Same day |
| 1:00 pm | 4:00 am | Same day |
| 2:00 pm | 5:00 am | Same day |
| 3:00 pm | 6:00 am | Same day |
| 4:00 pm | 7:00 am | Same day |
| 5:00 pm | 8:00 am | Same day |
| 6:00 pm | 9:00 am | Same day |
| 7:00 pm | 10:00 am | Same day |
| 8:00 pm | 11:00 am | Same day |
| 9:00 pm | 12:00 pm | Same day |
| 10:00 pm | 1:00 pm | Same day |
| 11:00 pm | 2:00 pm | Same day |
Daylight saving time
Neither Nairobi nor San José 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
- 6:31 AM
- Sunset
- 6:34 PM
- Day length
- 12h 3m
- Sunrise
- 5:16 AM
- Sunset
- 5:57 PM
- Day length
- 12h 41m
Cities in these zones
Other cities in East Africa Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in East Africa Time
- NBO
- WIL
- KIS
Airports in Central Standard Time
- SJO
- SYQ
Related conversions
Common conversions
- What is 9:00 am Nairobi in San José?
- 9:00 am Nairobi is 12:00 am San José.
- What is 12:00 pm Nairobi in San José?
- 12:00 pm Nairobi is 3:00 am San José.
- What is 12:30 pm Nairobi in San José?
- 12:30 pm Nairobi is 3:30 am San José.
- What is 2:00 pm Nairobi in San José?
- 2:00 pm Nairobi is 5:00 am San José.
- What is 5:00 pm Nairobi in San José?
- 5:00 pm Nairobi is 8:00 am San José.
- What is 11:30 pm Nairobi in San José?
- 11:30 pm Nairobi is 2:30 pm San José.