Castries runs on UTC−4 (AST) every day of the year, with no daylight saving time.
Castries and your time
Castries at a glance
| Country | St. Lucia |
|---|---|
| Region | Castries |
| Capital of | St. Lucia |
| Time zone | America/St_Lucia |
| Abbreviation now | AST |
| UTC offset now | UTC−4 |
| Daylight saving time | Not observed |
| Coordinates | 14.00° N, 61.01° W |
Castries time zone and clock changes
Castries follows the America/St_Lucia 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. Lucia, Castries shares one clock with the whole country.
Clock changes in Castries, 2026 and 2027
No clock changes are scheduled in Castries for 2026 or 2027.
Time difference between Castries and other cities
Take 9:00 AM in Castries: 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 |
Castries 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 counts the time when the clock reads between 9 AM and 5 PM in both cities on the same day.
Daylight in Castries
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Day length barely moves in Castries, from 11 hours 18 minutes to 12 hours 57 minutes. Sunrise and sunset shift by less than an hour across the year.
Daylight through the year in Castries
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:08 AM | 6:15 PM | 12 h 7 min |
| June solstice | June 21 | 5:37 AM | 6:35 PM | 12 h 57 min |
| September equinox | September 22 | 5:53 AM | 6:00 PM | 12 h 7 min |
| December solstice | December 21 | 6:23 AM | 5:41 PM | 11 h 18 min |
When the sun is highest in Castries
Castries lies close to the centre of its time zone, so the sun is highest at about 12:05 PM on standard time, close to clock noon.
Cities near Castries
Every city below shares Castries’s clock.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Fort-de-France (Martinique) | 68 km (42 mi) | --:-- | Same time |
| Kingstown (St. Vincent and Grenadines) | 96 km (60 mi) | --:-- | Same time |
| Roseau (Dominica) | 151 km (94 mi) | --:-- | Same time |
| Bridgetown (Barbados) | 179 km (112 mi) | --:-- | Same time |
| St. George's (Grenada) | 231 km (143 mi) | --:-- | Same time |
| Basse-Terre (Guadeloupe) | 236 km (147 mi) | --:-- | Same time |
| Les Abymes (Guadeloupe) | 259 km (161 mi) | --:-- | Same time |
Same time now, different rules
These places read the same time as Castries today but follow different rules, so they can drift apart when clocks change.
More cities in St. Lucia
All time zones and cities in St. Lucia
Plan around the time in Castries
- Convert a time to or from Castries: pick a date and time and see it in every city on your list.
- Add Castries to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Castries and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Castries in?
Castries uses the America/St_Lucia time zone, which is UTC−4 (AST) all year.
Does Castries use daylight saving time?
No. Castries stays on UTC−4 all year, so the time difference to places without daylight saving time never changes.
What is the time difference between Castries and London?
Castries is 4 hours behind London in January and 5 hours behind London in July, because London moves its clocks for daylight saving time and Castries does not.
How long is the longest day in Castries?
About 12 hours 57 minutes, around the June solstice. The shortest day, around the December solstice, has about 11 hours 18 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.