Offset
The time difference between Greenwich Mean Time and San José is 7 hours.
Greenwich Mean Time (BST) is ahead of San José (CST).
BST: UTC+1
CST: UTC-6
Greenwich Mean Time is currently observing daylight saving time; San José is not.
When to schedule
Business-hours overlap: 4 PM–5 PM in Greenwich Mean Time (9 AM–10 AM in San José).
Both teams are in working hours during this window on weekdays.
Suggested time: 4:00 PM Greenwich Mean Time (9:00 AM San José).
This window may shift by an hour during daylight saving time.
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 Kingdom
- Good FridayFri, Apr 3
- Early May Bank HolidayMon, May 4
- Spring Bank HolidayMon, May 25
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
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
Greenwich Mean Time is also known as GMT, or BST. To call United Kingdom, dial +44.
San José uses Central Standard Time. To call Costa Rica, dial +506.
San José is approximately 5,400 miles west of Greenwich Mean Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| GMT | San José | Day |
|---|---|---|
| 12:00 am | 5:00 pm | -1 day |
| 1:00 am | 6:00 pm | -1 day |
| 2:00 am | 7:00 pm | -1 day |
| 3:00 am | 8:00 pm | -1 day |
| 4:00 am | 9:00 pm | -1 day |
| 5:00 am | 10:00 pm | -1 day |
| 6:00 am | 11:00 pm | -1 day |
| 7:00 am | 12:00 am | Same day |
| 8:00 am | 1:00 am | Same day |
| 9:00 am | 2:00 am | Same day |
| 10:00 am | 3:00 am | Same day |
| 11:00 am | 4:00 am | Same day |
| 12:00 pm | 5:00 am | Same day |
| 1:00 pm | 6:00 am | Same day |
| 2:00 pm | 7:00 am | Same day |
| 3:00 pm | 8:00 am | Same day |
| 4:00 pm | 9:00 am | Same day |
| 5:00 pm | 10:00 am | Same day |
| 6:00 pm | 11:00 am | Same day |
| 7:00 pm | 12:00 pm | Same day |
| 8:00 pm | 1:00 pm | Same day |
| 9:00 pm | 2:00 pm | Same day |
| 10:00 pm | 3:00 pm | Same day |
| 11:00 pm | 4:00 pm | Same day |
Daylight saving time
Greenwich Mean Time observes daylight saving time; San José does not. The offset between the two zones changes when Greenwich Mean Time transitions: on Sunday, October 25, 2026, clocks fall back from BST to GMT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 4:47 AM
- Sunset
- 9:13 PM
- Day length
- 16h 27m
- Sunrise
- 5:16 AM
- Sunset
- 5:56 PM
- Day length
- 12h 41m
Daylight overlap: 8h 58m — 12:16 PM–9:13 PM in Greenwich Mean Time (5:16 AM–2:13 PM in San José). Both locations are in daylight during this window.
Cities in these zones
Cities in Greenwich Mean Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Greenwich Mean Time
- LCY
- LGW
- LHR
- LTN
- STN
- BHX
- EMA
- GLA
- PIK
- LBA
Airports in Central Standard Time
- SJO
- SYQ
Related conversions
Common conversions
- What is 9:00 am GMT in San José?
- 9:00 am GMT is 2:00 am San José.
- What is 12:00 pm GMT in San José?
- 12:00 pm GMT is 5:00 am San José.
- What is 12:30 pm GMT in San José?
- 12:30 pm GMT is 5:30 am San José.
- What is 2:00 pm GMT in San José?
- 2:00 pm GMT is 7:00 am San José.
- What is 5:00 pm GMT in San José?
- 5:00 pm GMT is 10:00 am San José.
- What is 11:30 pm GMT in San José?
- 11:30 pm GMT is 4:30 pm San José.