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Sun times

Massachusetts · United States

Sunrise and Sunset Times Today in Acton, Massachusetts

· EDT (UTC−04:00)

Sunset in Acton is at 5:45 PM and sunrise is at 7:13 AM. There are 10h 32m of daylight.

Sunset

5:45 PM

253° W

Sunrise

7:13 AM

107° E

Daylight

10h 32m

0h 03m shorter than the previous day

Solar noon

12:30 PM

Sun altitude: 34.6°

SunriseSunset

Live countdown to the next sunrise or sunset

Times use the city center and a clear, level horizon. Hills, buildings and weather can change what you see.

Tomorrow in Acton

Wednesday, October 28, 2026: sunset 5:44 PM, sunrise 7:14 AM. Daylight: 10h 30m.


Twilight and golden hour

Morning light

  • Astronomical dawn (−18°)5:39 AM
  • Nautical dawn (−12°)6:11 AM
  • Civil dawn (−6°)6:44 AM
  • Golden hour (−4° to +6°)6:55 AM – 7:53 AM

Evening light

  • Golden hour (+6° to −4°)5:06 PM – 6:03 PM
  • Civil dusk (−6°)6:14 PM
  • Nautical dusk (−12°)6:47 PM
  • Astronomical dusk (−18°)7:20 PM

Golden hour is an approximate photography window, not a weather forecast. About twilight and light thresholds.

Local time in Acton

America/New_York · EDT · UTC−04:00. Daylight saving time is in effect.

The next clock change is on Sunday, November 1, 2026, from UTC−04:00 to UTC−05:00. Times in the calendar already include this change.

Clock changes and regional exceptions in United States

IANA timezone data 2026e. Future rules can change; corrections are welcome.

Sunrise and sunset calendar for Acton


2026-10. Local times in America/New_York; clock changes apply on their actual dates.
DateSunsetSunriseDaylight
6:27 PM6:43 AM11h 44m
6:25 PM6:44 AM11h 41m
6:24 PM6:45 AM11h 38m
6:22 PM6:46 AM11h 36m
6:20 PM6:47 AM11h 33m
6:18 PM6:48 AM11h 30m
6:17 PM6:50 AM11h 27m
6:15 PM6:51 AM11h 24m
6:13 PM6:52 AM11h 21m
6:12 PM6:53 AM11h 19m
6:10 PM6:54 AM11h 16m
6:08 PM6:55 AM11h 13m
6:07 PM6:56 AM11h 10m
6:05 PM6:58 AM11h 07m
6:03 PM6:59 AM11h 05m
6:02 PM7:00 AM11h 02m
6:00 PM7:01 AM10h 59m
5:59 PM7:02 AM10h 56m
5:57 PM7:04 AM10h 54m
5:56 PM7:05 AM10h 51m
5:54 PM7:06 AM10h 48m
5:53 PM7:07 AM10h 46m
5:51 PM7:08 AM10h 43m
5:50 PM7:10 AM10h 40m
5:48 PM7:11 AM10h 37m
5:47 PM7:12 AM10h 35m
5:45 PM7:13 AM10h 32m
5:44 PM7:14 AM10h 30m
5:43 PM7:16 AM10h 27m
5:41 PM7:17 AM10h 24m
5:40 PM7:18 AM10h 22m
Download 2026 calendar (CSV)

About these times

Calculation point
42.48509°, -71.43284°
Place reference
GeoNames 4928703

Sunrise and sunset use a solar-center altitude of −0.833°, including a standard allowance for refraction and the sun’s radius. The result is rounded to the nearest minute. Terrain and unusual atmospheric conditions are not modeled.

Sources, validation and limitations