Offset
The time difference between Tokyo and San José is 15 hours.
Tokyo (JST) is ahead of San José (CST).
JST: UTC+9
CST: UTC-6
Neither Tokyo nor San José is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Tokyo and San José don't overlap on the same weekday. San José is 15 hours behind Tokyo.
Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.
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.
Japan
- New Year's DayThu, Jan 1
- Coming of Age DayMon, Jan 12
- Foundation DayWed, Feb 11
- The Emperor's BirthdayMon, Feb 23
- Vernal Equinox DayFri, Mar 20
- Shōwa DayWed, Apr 29
- Constitution Memorial DayWed, May 6
- Greenery DayMon, May 4
- Children's DayTue, May 5
- Marine DayMon, Jul 20
- Mountain DayTue, Aug 11
- Respect for the Aged DayMon, Sep 21
- Autumnal Equinox DayWed, Sep 23
- Sports DayMon, Oct 12
- Culture DayTue, Nov 3
- Labour Thanksgiving DayMon, Nov 23
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.
| Tokyo | San José | Day |
|---|---|---|
| 12:00 am | 9:00 am | -1 day |
| 1:00 am | 10:00 am | -1 day |
| 2:00 am | 11:00 am | -1 day |
| 3:00 am | 12:00 pm | -1 day |
| 4:00 am | 1:00 pm | -1 day |
| 5:00 am | 2:00 pm | -1 day |
| 6:00 am | 3:00 pm | -1 day |
| 7:00 am | 4:00 pm | -1 day |
| 8:00 am | 5:00 pm | -1 day |
| 9:00 am | 6:00 pm | -1 day |
| 10:00 am | 7:00 pm | -1 day |
| 11:00 am | 8:00 pm | -1 day |
| 12:00 pm | 9:00 pm | -1 day |
| 1:00 pm | 10:00 pm | -1 day |
| 2:00 pm | 11:00 pm | -1 day |
| 3:00 pm | 12:00 am | Same day |
| 4:00 pm | 1:00 am | Same day |
| 5:00 pm | 2:00 am | Same day |
| 6:00 pm | 3:00 am | Same day |
| 7:00 pm | 4:00 am | Same day |
| 8:00 pm | 5:00 am | Same day |
| 9:00 pm | 6:00 am | Same day |
| 10:00 pm | 7:00 am | Same day |
| 11:00 pm | 8:00 am | Same day |
Daylight saving time
Neither Tokyo 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
- 4:26 AM
- Sunset
- 6:56 PM
- Day length
- 14h 30m
- Sunrise
- 5:16 AM
- Sunset
- 5:57 PM
- Day length
- 12h 41m
Daylight overlap: 4h 31m — 4:26 AM–8:57 AM in Tokyo (1:26 PM–5:57 PM in San José). Both locations are in daylight during this window.
Cities in these zones
Other cities in Japan Standard Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Japan Standard Time
- HND
- NRT
- ITM
- KIX
- UKB
- NGO
- NKM
- CTS
- OKD
- FUK
Airports in Central Standard Time
- SJO
- SYQ
Related conversions
Common conversions
- What is 9:00 am Tokyo in San José?
- 9:00 am Tokyo is 6:00 pm San José, the previous day.
- What is 12:00 pm Tokyo in San José?
- 12:00 pm Tokyo is 9:00 pm San José, the previous day.
- What is 12:30 pm Tokyo in San José?
- 12:30 pm Tokyo is 9:30 pm San José, the previous day.
- What is 2:00 pm Tokyo in San José?
- 2:00 pm Tokyo is 11:00 pm San José, the previous day.
- What is 5:00 pm Tokyo in San José?
- 5:00 pm Tokyo is 2:00 am San José.
- What is 11:30 pm Tokyo in San José?
- 11:30 pm Tokyo is 8:30 am San José.