Groton in numbers
- Coordinates
- 42.6137, -71.5614
- Elevation
- 101 m above sea level
- Population
- 1 124
- Region
- Massachusetts
- Country
- United States, North America
- Capital
- Washington, D.C. — 619 km away
- Same name
- 6 more places in the world share this name
What time is it in Groton, Massachusetts, United States
Watch the current local time in Groton, Massachusetts, United States, running on the America/New_York time zone (−4).
Groton, United States
Saturday, 31 October 2026
UTC−4 · America/New_York
Local time in Groton
UTC−4 · daylight saving time is active
What the clock shows right now in Groton.
The sun today
Sunrise 7:20 AM Solar noon 12:31 PM Sunset 5:42 PM Daylight 10 h 23 min Night 13 h 37 min Civil twilight 6:50 AM – 6:11 PM
Weather in Groton right now
Loading the current weather…
Weather data by Open-Meteo, updated every 30 minutes.
Groton and its neighbours
Postal codes
- 01450
- 01470
- 01471
- 05046
- 06340
- 06349
- 13073
- 57445
Postal codes come from the free GeoNames dataset. Where a code is listed with a distance, it belongs to a nearby settlement — GeoNames spells that name differently from ours.
Largest cities in Massachusetts
- Boston 653 833
- South Boston 571 281
- Worcester 206 518
- Springfield 154 341
- Lowell 110 699
- Cambridge 110 402
Other places named Groton
- Groton Connecticut, United States
- Groton New York, United States
- Groton South Dakota, United States
- Groton New Hampshire, United States
- Groton Vermont, United States
Same time zone — America/New_York
- New York City United States
- Brooklyn United States
- Queens United States
- Philadelphia United States
- Manhattan United States
- The Bronx United States
Nearby places
- South Pepperell — 4.7 km
- West Groton — 5.5 km
- Ayer — 5.7 km
- East Pepperell — 5.8 km
- Vose — 5.9 km
- East Groton — 6.0 km
Time and daylight in Groton
South Pepperell and West Groton are neighbours of Groton on the same clock.
Mail addressed to Groton uses 8 postal codes.
The clock in Groton is set to America/New_York, offset UTC−4. Daylight saving time in use: Yes.
Sunrise time for Groton today is 7:20 AM; sunset time is 5:42 PM. Daylight fills 10 h 23 min.
Questions and answers
- Which time zone is observed in Groton?
- Groton observes the America/New_York time zone, with an offset of −4.
- Is there a seasonal clock change in Groton?
- Yes.
- How late in the morning does the sun rise in Groton?
- It rises at 7:20 AM.