Gustavia runs on UTC−4 (AST) every day of the year, with no daylight saving time.
Gustavia and your time
Gustavia at a glance
| Country | St. Barthélemy |
|---|---|
| Capital of | St. Barthélemy |
| Time zone | America/St_Barthelemy |
| Abbreviation now | AST |
| UTC offset now | UTC−4 |
| Daylight saving time | Not observed |
| Coordinates | 17.90° N, 62.85° W |
Gustavia time zone and clock changes
Gustavia follows the America/St_Barthelemy time zone and stays on UTC−4 all year. The tz database records no daylight saving time here since 1970.
As the capital of St. Barthélemy, Gustavia shares one clock with the whole country.
Clock changes in Gustavia, 2026 and 2027
No clock changes are scheduled in Gustavia for 2026 or 2027.
Time difference between Gustavia and other cities
Take 9:00 AM in Gustavia: the clock reads 1:00 PM in London, 12:00 AM (next day) in Sydney and 5:00 AM in Los Angeles.
| City | Time now | Difference now | In January | In July | Shared office hours |
|---|---|---|---|---|---|
| New York (United States) | --:-- | 1 h behind | 1 h behind | Same time | 7 h |
| Los Angeles (United States) | --:-- | 4 h behind | 4 h behind | 3 h behind | 4 h |
| London (United Kingdom) | --:-- | 4 h ahead | 4 h ahead | 5 h ahead | 4 h |
| Paris (France) | --:-- | 5 h ahead | 5 h ahead | 6 h ahead | 3 h |
| Dubai (United Arab Emirates) | --:-- | 8 h ahead | 8 h ahead | 8 h ahead | None |
| Mumbai (India) | --:-- | 9 h 30 min ahead | 9 h 30 min ahead | 9 h 30 min ahead | None |
| Singapore | --:-- | 12 h ahead | 12 h ahead | 12 h ahead | None |
| Tokyo (Japan) | --:-- | 13 h ahead | 13 h ahead | 13 h ahead | None |
| Sydney (Australia) | --:-- | 15 h ahead | 15 h ahead | 14 h ahead | None |
| UTC | --:-- | 4 h ahead | 4 h ahead | 4 h ahead | 4 h |
Gustavia never changes its clocks, but many of these cities do. Where the January and July columns disagree, the gap shifts when the other city moves to or from daylight saving time.
Shared office hours is the part of a 9 AM to 5 PM local working day that both cities have in common. Weekends are not taken into account.
Sunrise and sunset in Gustavia
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Close to the equator, days in Gustavia last between 11 hours 4 minutes and 13 hours 12 minutes, so evenings get dark at about the same time all year.
Daylight through the year in Gustavia
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:15 AM | 6:22 PM | 12 h 7 min |
| June solstice | June 21 | 5:37 AM | 6:49 PM | 13 h 12 min |
| September equinox | September 22 | 6:00 AM | 6:08 PM | 12 h 7 min |
| December solstice | December 21 | 6:38 AM | 5:41 PM | 11 h 4 min |
Clock time and sun time in Gustavia
Gustavia lies close to the centre of its time zone, so the sun is highest at about 12:10 PM on standard time, close to clock noon.
Cities near Gustavia
All the places listed below keep the same time as Gustavia.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Philipsburg (Sint Maarten) | 25 km (16 mi) | --:-- | Same time |
| Marigot (St. Martin) | 31 km (19 mi) | --:-- | Same time |
| The Valley (Anguilla) | 42 km (26 mi) | --:-- | Same time |
| Basseterre (St. Kitts and Nevis) | 68 km (42 mi) | --:-- | Same time |
| St John's (Antigua and Barbuda) | 137 km (85 mi) | --:-- | Same time |
| Brades (Montserrat) | 140 km (87 mi) | --:-- | Same time |
| Road Town (British Virgin Islands) | 196 km (122 mi) | --:-- | Same time |
| St Croix (U.S. Virgin Islands) | 202 km (125 mi) | --:-- | Same time |
Same time now, different rules
These places read the same time as Gustavia today but follow different rules, so they can drift apart when clocks change.
Tools for time in Gustavia
- Convert a time to or from Gustavia: pick a date and time and see it in every city on your list.
- Add Gustavia to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Gustavia and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Gustavia in?
Gustavia uses the America/St_Barthelemy time zone, which is UTC−4 (AST) all year.
Does Gustavia use daylight saving time?
No. Gustavia stays on UTC−4 all year, so the time difference to places without daylight saving time never changes.
What is the time difference between Gustavia and London?
Gustavia is 4 hours behind London in January and 5 hours behind London in July, because London moves its clocks for daylight saving time and Gustavia does not.
How long is the longest day in Gustavia?
About 13 hours 12 minutes, around the June solstice. The shortest day, around the December solstice, has about 11 hours 4 minutes of daylight.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.