What time is sunrise and sunset in Groton?

Today and tomorrow's sunrise and sunset times in Groton, Massachusetts. Plus a monthly calendar with dawn, dusk, solar noon, and day length.

Today

Thursday, October 15, 2026

Sunrise

6:57 AM

101° EDawn 6:29 AM

Sunrise in Groton will be at 6:57:29 AM EDT (in 4h 11m).

Sunset

6:05 PM

259° WDusk 6:34 PM

Sunset in Groton will be at 6:05:56 PM EDT (in 15h 20m).

Now

6:57a6:05p

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Night now · First light at 5:23 AM

Daylight: 11h 08m
Darkness: 9h 48m
Solar noon: 12:32 PM
Sun altitude: 44.5° below
Sun direction: 51° NE

How long golden hour and blue hour last

Tomorrow

Friday, October 16, 2026

Sunrise

6:58 AM

101° EDawn 6:30 AM

Sunrise in Groton will be at 6:58:39 AM EDT (in 28h 12m).

Sunset

6:04 PM

259° WSWDusk 6:32 PM

Sunset in Groton will be at 6:04:20 PM EDT (in 39h 18m).

Moon tonight

Phase, moonrise and moonset in Groton

Waxing Crescent

23% illuminated

Moonrise: 12:19 PM
Moonset: 8:43 PM

Calendar

Eastern Time · select a day to expand

	Date	Dawn	Sunrise	Solar noon	Sunset	Dusk	Length
	1 Thu	6:13 AM	6:41 AM	12:35 PM	6:29 PM	6:57 PM	11h 47m 58s
	2 Fri	6:14 AM	6:42 AM	12:35 PM	6:27 PM	6:55 PM	11h 45m 07s
	3 Sat	6:15 AM	6:43 AM	12:35 PM	6:26 PM	6:54 PM	11h 42m 16s
	4 Sun	6:16 AM	6:44 AM	12:34 PM	6:24 PM	6:52 PM	11h 39m 25s
	5 Mon	6:17 AM	6:46 AM	12:34 PM	6:22 PM	6:50 PM	11h 36m 35s
	6 Tue	6:18 AM	6:47 AM	12:34 PM	6:20 PM	6:49 PM	11h 33m 44s
	7 Wed	6:20 AM	6:48 AM	12:34 PM	6:19 PM	6:47 PM	11h 30m 54s
	8 Thu	6:21 AM	6:49 AM	12:33 PM	6:17 PM	6:45 PM	11h 28m 05s
	9 Fri	6:22 AM	6:50 AM	12:33 PM	6:15 PM	6:43 PM	11h 25m 15s
	10 Sat	6:23 AM	6:51 AM	12:33 PM	6:14 PM	6:42 PM	11h 22m 26s
	11 Sun	6:24 AM	6:52 AM	12:32 PM	6:12 PM	6:40 PM	11h 19m 37s
	12 Mon	6:25 AM	6:53 AM	12:32 PM	6:10 PM	6:39 PM	11h 16m 49s
	13 Tue	6:26 AM	6:55 AM	12:32 PM	6:09 PM	6:37 PM	11h 14m 01s
	14 Wed	6:27 AM	6:56 AM	12:32 PM	6:07 PM	6:35 PM	11h 11m 14s
	15 Thu	6:29 AM	6:57 AM	12:32 PM	6:05 PM	6:34 PM	11h 08m 27s
Thursday, October 15 11h 08m 27s of daylight·−2m 47s vs. yesterday·twilight 6:29 AM – 6:34 PM Time 2:46 AM Altitude -44.6° Heading 51° NE Light Night 2:46 AM, Night, altitude -44.6 degrees
	16 Fri	6:30 AM	6:58 AM	12:31 PM	6:04 PM	6:32 PM	11h 05m 40s
	17 Sat	6:31 AM	6:59 AM	12:31 PM	6:02 PM	6:31 PM	11h 02m 55s
	18 Sun	6:32 AM	7:01 AM	12:31 PM	6:01 PM	6:29 PM	11h 00m 09s
	19 Mon	6:33 AM	7:02 AM	12:31 PM	5:59 PM	6:28 PM	10h 57m 25s
	20 Tue	6:34 AM	7:03 AM	12:31 PM	5:58 PM	6:26 PM	10h 54m 41s
	21 Wed	6:35 AM	7:04 AM	12:30 PM	5:56 PM	6:25 PM	10h 51m 58s
	22 Thu	6:37 AM	7:05 AM	12:30 PM	5:55 PM	6:23 PM	10h 49m 15s
	23 Fri	6:38 AM	7:07 AM	12:30 PM	5:53 PM	6:22 PM	10h 46m 33s
	24 Sat	6:39 AM	7:08 AM	12:30 PM	5:52 PM	6:20 PM	10h 43m 52s
	25 Sun	6:40 AM	7:09 AM	12:30 PM	5:50 PM	6:19 PM	10h 41m 12s
	26 Mon	6:41 AM	7:10 AM	12:30 PM	5:49 PM	6:18 PM	10h 38m 33s
	27 Tue	6:42 AM	7:11 AM	12:30 PM	5:47 PM	6:16 PM	10h 35m 55s
	28 Wed	6:44 AM	7:13 AM	12:30 PM	5:46 PM	6:15 PM	10h 33m 18s
	29 Thu	6:45 AM	7:14 AM	12:30 PM	5:45 PM	6:14 PM	10h 30m 42s
	30 Fri	6:46 AM	7:15 AM	12:29 PM	5:43 PM	6:12 PM	10h 28m 07s
	31 Sat	6:47 AM	7:16 AM	12:29 PM	5:42 PM	6:11 PM	10h 25m 33s

Photos

Sunrise and sunset photos of Groton from Flickr.

FAQ

Frequently asked questions about sunrise and sunset in Groton, United States

What time does the sun rise in Groton today?: Sunrise in Groton today (Thursday, October 15, 2026) is at 6:57 AM. The sun comes up in the E.
What time does the sun set in Groton today?: Sunset today is at 6:05 PM, after 11h 08m of daylight.
When does it get dark in Groton tonight?: Civil twilight ends at 6:34 PM. After that you need artificial light for most things outdoors. Astronomical twilight ends at 7:39 PM, which is when night starts by the standard definition.How long after sunset it gets dark
When is the longest day in Groton, United States?: The longest day of 2026 in Groton is Sunday, June 21, 2026, the summer solstice, with 15h 18m of daylight. In 2027 the summer solstice falls on June 21, 2027.More on the summer solstice
When is the shortest day in Groton, United States?: The shortest day of 2026 in Groton, Massachusetts is Monday, December 21, 2026, the winter solstice, with 9h 02m of daylight. In 2027 the winter solstice lands on December 21, 2027.
How much more daylight does Groton get in summer than in winter?: Groton gets 6h 16m more daylight on its longest day than on its shortest (15h 18m against 9h 02m). Averaged across the year, a day here has 12h 12m of daylight.
When is the earliest sunrise in Groton?: The earliest sunrise of 2026 in Groton is on Sunday, June 14, 2026, when the sun comes up at 5:07 AM.
When is the latest sunset in Groton?: The latest sunset is on Friday, June 26, 2026 at 8:28 PM.
When is the earliest sunset in Groton?: The earliest sunset of the year is on Tuesday, December 8, 2026, with the sun down by 4:12 PM.Why it comes before the shortest day
When is the latest sunrise in Groton?: The latest sunrise is on Saturday, October 31, 2026 at 7:18 AM.
Does Groton observe daylight saving time?: Yes. Groton uses Eastern Time: clocks go forward on March 8, 2026, then back on November 1, 2026. Sunrise and sunset times jump by an hour on those dates.

Nearby

Other places close to Groton

Cities near Groton

National parks & monuments nearby

Fall color spots nearby, from Fall Photo Guide

Developers: get this data programmatically with the free JSON API.

GET https://api.sunrisesunset.io/json?lat=42.6112&lng=-71.57451