How to use it
Type a 5-digit ZIP code, or a city and state like “Duluth, MN”, and press Show my sunset. You get your sunset on Saturday, Oct 31 and on Sunday, Nov 1, what the sky looks like at 5 pm the Monday after, how long it stays light on Halloween, and the darkest stretch of the winter: the earliest sunset, the shortest day, the latest sunrise and the day 5 pm sunsets come back.
The band under your answer is your whole day, midnight to midnight, coloured by how high the Sun is. Press Fall back and watch the sky slide an hour to the left under the 5 pm line. The sky didn't change. The clock did.
Live near a time-zone line? Use Change next to your time zone. In Arizona we also ask whether your clocks change, because the Navajo Nation uses daylight saving time and the rest of the state, including the Hopi Reservation, doesn't.
What changes on Nov 1
Under federal law (15 U.S.C. §260a (opens in a new tab)), daylight saving time runs from 2:00 a.m. on the second Sunday of March to 2:00 a.m. on the first Sunday of November. In 2026 that's Sunday, Nov 1 at 2:00 a.m.: clocks go back to 1:00 a.m. (NIST (opens in a new tab)). The next changes are Sun, Mar 14, 2027 (spring forward) and Sun, Nov 7, 2027 (fall back).
Because the clock moves back an hour, every sun time moves an hour earlier on the clock. Sunset in New York goes from 5:53 pm to 4:52 pm: 60 minutes from the clock and one more because the days are still getting shorter. Mornings get the hour back: New York's sunrise goes from 7:25 am to 6:26 am.
Hawaii, American Samoa, Guam, Puerto Rico, the U.S. Virgin Islands, the Northern Mariana Islands and Arizona (except the Navajo Nation) don't use daylight saving time, so nothing jumps there.
How we compute it
Your ZIP becomes a point: the center of the ZIP code area from the US Census. We look it up in files that come with this page, so your ZIP never leaves your browser. Then we compute the Sun's position with Astronomy Engine (opens in a new tab), using the same definitions as the U.S. Naval Observatory: sunset is when the top of the Sun touches a flat horizon, and civil twilight ends when the Sun's center is 6° below it.
We checked our times against the Naval Observatory for 10 cities on 4 dates: all 160 times match to the minute. Across every day of 2026 and 2027 (21,844 times), the biggest difference is 1 minute. Details on how it works.
Sunset before and after the clock change in 10 cities
| City | Oct 31 | Nov 1 | Earliest sunset | Back to 5 pm |
|---|---|---|---|---|
| New York, NY | 5:53 pm | 4:52 pm | 4:28 pm, Dec 8 | Jan 21 |
| Chicago, IL | 5:46 pm | 4:45 pm | 4:19 pm, Dec 8 | Jan 28 |
| Denver, CO | 5:59 pm | 4:58 pm | 4:35 pm, Dec 7 | Jan 15 |
| Los Angeles, CA | 6:01 pm | 5:00 pm | 4:43 pm, Dec 4 | Jan 8 |
| Seattle, WA | 5:53 pm | 4:51 pm | 4:18 pm, Dec 10 | Jan 25 |
| Boston, MA | 5:39 pm | 4:37 pm | 4:12 pm, Dec 8 | Feb 3 |
| Miami, FL | 6:40 pm | 5:39 pm | 5:29 pm, Nov 29 | Never below 5 pm |
| Anchorage, AK | 6:00 pm | 4:57 pm | 3:40 pm, Dec 16 | Jan 30 |
| Phoenix, AZ | 5:37 pm | 5:36 pm | 5:20 pm, Dec 4 | Never below 5 pm |
| Honolulu, HI | 5:56 pm | 5:55 pm | 5:48 pm, Nov 26 | Never below 5 pm |
Times are for the center of one ZIP code in each city. Phoenix and Honolulu don't change clocks, so their sunset only moves a minute. More: Halloween sunset and why the earliest sunset comes early.