Plymouth keeps UTC−4 (AST) all year. There is no daylight saving time, so the clock never changes.
Plymouth and your time
Plymouth at a glance
| Country | Montserrat |
|---|---|
| Region | Saint Anthony |
| Capital of | Montserrat |
| Time zone | America/Montserrat |
| Abbreviation now | AST |
| UTC offset now | UTC−4 |
| Daylight saving time | Not observed |
| Coordinates | 16.71° N, 62.21° W |
Which time zone Plymouth uses
Local time in Plymouth is UTC−4 year round, under the America/Montserrat rules. Clocks have not changed for the seasons here since at least 1970.
Plymouth is the capital, and all of Montserrat keeps this time.
Clock changes in Plymouth, 2026 and 2027
No clock changes are scheduled in Plymouth for 2026 or 2027.
Time difference between Plymouth and other cities
When it is 9:00 AM in Plymouth, it is 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 |
Because Plymouth keeps one offset all year, any change in the gap comes from the other city’s daylight saving time. Compare the January and July columns.
Shared office hours counts the time when the clock reads between 9 AM and 5 PM in both cities on the same day.
Sunrise, sunset and day length in Plymouth
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Day length barely moves in Plymouth, from 11 hours 8 minutes to 13 hours 8 minutes. Sunrise and sunset shift by less than an hour across the year.
Daylight through the year in Plymouth
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:13 AM | 6:20 PM | 12 h 7 min |
| June solstice | June 21 | 5:37 AM | 6:45 PM | 13 h 8 min |
| September equinox | September 22 | 5:58 AM | 6:05 PM | 12 h 7 min |
| December solstice | December 21 | 6:33 AM | 5:41 PM | 11 h 8 min |
Clock time and sun time in Plymouth
Clock time and sun time line up fairly well in Plymouth: solar noon falls at about 12:10 PM on standard time.
Places close to Plymouth
All the places listed below keep the same time as Plymouth.
| City | Distance | Time now | Difference |
|---|---|---|---|
| St John's (Antigua and Barbuda) | 61 km (38 mi) | --:-- | Same time |
| Basseterre (St. Kitts and Nevis) | 85 km (53 mi) | --:-- | Same time |
| Les Abymes (Guadeloupe) | 89 km (56 mi) | --:-- | Same time |
| Basse-Terre (Guadeloupe) | 94 km (58 mi) | --:-- | Same time |
| Gustavia (St. Barthélemy) | 149 km (92 mi) | --:-- | Same time |
| Philipsburg (Sint Maarten) | 171 km (106 mi) | --:-- | Same time |
| Marigot (St. Martin) | 177 km (110 mi) | --:-- | Same time |
| Roseau (Dominica) | 179 km (111 mi) | --:-- | Same time |
Same time now, different rules
These places read the same time as Plymouth today but follow different rules, so they can drift apart when clocks change.
More cities in Montserrat
All time zones and cities in Montserrat
Tools for time in Plymouth
- Convert a time to or from Plymouth: pick a date and time and see it in every city on your list.
- Add Plymouth to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Plymouth and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Plymouth in?
Plymouth uses the America/Montserrat time zone, which is UTC−4 (AST) all year.
Does Plymouth use daylight saving time?
No. Plymouth stays on UTC−4 all year, so the time difference to places without daylight saving time never changes.
What is the time difference between Plymouth and London?
Plymouth is 4 hours behind London in January and 5 hours behind London in July, because London moves its clocks for daylight saving time and Plymouth does not.
How long is the longest day in Plymouth?
About 13 hours 8 minutes, around the June solstice. The shortest day, around the December solstice, has about 11 hours 8 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.