Boston’s sunset is at 6:47 p.m. on Sept 19, 2026, and 4:37 p.m. on Nov 1, the day daylight saving time ends. Those times come from the U.S. Naval Observatory’s sun data for Boston, and the gap matters if you have outdoor work to finish or a listing to photograph.
The equinox
The Naval Observatory puts the 2026 fall equinox at 8:05 p.m. Eastern time on Sept 22. Sunset in Boston that day is 6:41 p.m.
How fast the evenings shrink
Sunset in Boston, per the Naval Observatory: 6:47 p.m. on Sept 19, 6:41 p.m. on Sept 22, 5:56 p.m. on Oct 19 and 5:39 p.m. on Oct 31. In between, it slips a little earlier every evening.
When the clocks go back
Under 15 U.S.C. § 260a, daylight saving time ends at 2 a.m. on a set day in early November, which in 2026 is Nov 1. The Naval Observatory’s Boston data switches to standard time that day and shows sunset at 4:37 p.m. The clock change adds the hour to the morning and takes it from the evening.
For owners
If your outdoor lights run on a clock timer that doesn’t adjust itself for daylight saving, it’ll be an hour off after Nov 1, so reset it. And if you want to look over gutters, front steps and railings after work, the evenings before Nov 1 are the easiest time this fall to do it.
For sellers
If you’re listing this fall, schedule photos while the sun is well up. A late-afternoon shoot that works in September runs into dusk by November. Want to talk through timing? Ask me. Diana Kim, REALTOR®, eXp Realty.
Questions
Common questions
When is the fall equinox in 2026?
Sept 22, 2026 at 8:05 p.m. Eastern time, according to the U.S. Naval Observatory.
What time is sunset in Boston on Nov 1, 2026?
4:37 p.m. Eastern Standard Time, per the U.S. Naval Observatory. Daylight saving time ends at 2 a.m. that morning.
What time is sunset in Boston on Oct 31, 2026?
5:39 p.m. Eastern Daylight Time, the last evening on daylight saving time.
When does daylight saving time end in 2026?
At 2 a.m. on Nov 1, 2026, under 15 U.S.C. § 260a.
Sources
- U.S. Naval Observatory, Astronomical Applications API, Earth's seasons 2026 (tz -4, no DST adjustment, i.e. Eastern Daylight Time): 'Equinox', day 22, month 9, time '20:05', year 2026. That is 8:05 p.m. EDT on September 22, 2026.
- U.S. Naval Observatory, one-day sun and moon data for Boston (42.3601 N, 71.0589 W), September 19, 2026, Eastern time with daylight saving: Rise 06:28 DT, Set 18:47 DT. Sunset 6:47 p.m.
- Same USNO service, Boston, September 22, 2026: Rise 06:32 DT, Set 18:41 DT. Sunset 6:41 p.m. on the day of the equinox.
- Same USNO service, Boston, October 19, 2026: Set 17:56 DT. Sunset 5:56 p.m.
- Same USNO service, Boston, October 31, 2026: Set 17:39 DT (still daylight time). Sunset 5:39 p.m.
- Same USNO service, Boston, November 1, 2026: Rise 06:18 ST, Set 16:37 ST. The service switches to standard time (ST) on this date. Sunset 4:37 p.m., 62 minutes earlier on the clock than the 5:39 p.m. sunset of October 31.
- 15 U.S.C. § 260a(a): daylight saving time runs from 2 o'clock antemeridian on the second [weekend day] of March and ending at 2 o'clock antemeridian on the first [weekend day] of November each year (statute names the day). Computed: that November date in 2026 is November 1, 2026, which matches the USNO service showing standard time for Boston on that date.
Written by Diana Yeji Kim — REALTOR® at eXp Realty, serving Greater Boston in English, Korean, and Japanese.
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