What time zone is Williamstown in?

Williamstown uses Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) in summer. Its IANA time zone is America/New_York.

When is the next clock change in Williamstown?

Clocks in Williamstown move forward 1 hour on Sunday, March 14, 2027 at 2:00 AM, changing from EST (UTC−05:00) to EDT (UTC−04:00)

Does Williamstown observe daylight saving time?

Yes. Williamstown observes daylight saving time: EDT (UTC−4) in summer and EST (UTC−5) in winter.

What is the UTC offset of Williamstown?

Williamstown is UTC−5 in winter and UTC−4 in summer

Current Time in Williamstown, Berkshire County, Massachusetts, USA

6:52:56 AM

06:52:56

Sunday, November 15, 2026

EST (Eastern Standard Time) · UTC−05:00

America/New_York

Compare Williamstown time View Williamstown on map

Time zone details

Williamstown is currently on standard time; daylight saving time is observed in 2026

Daylight in Williamstown

Sunrise6:44 AMSolar noon11:37 AMSunset4:29 PM

Next clock changeMar 14, 2027 · Clocks move forward 1 hour · in 118 daysUpcomingView details Weather nowLoading current forecast…Forecast details

Location facts

Place

Country: USA
State: Massachusetts
County: Berkshire County
Place type: Populated place
Country currency: US Dollar (USD)

Practical

Country languages: English, Spanish, Hawaiian, French
Dialing code: +1
Population: 4,325
Elevation: 209 m

Geography

Geographic coordinates: 42° 42' N / 73° 12' W

View on map

Convert Williamstown time

Compare Williamstown with another city or time zone

Clock changes in Williamstown

Next clock change

Upcoming

Sunday, March 14, 2027

2:00 AM EST3:00 AM EDT

Clocks move forward 1 hour

Sunday, March 8, 2026past
Daylight saving time starts
2:00 AM EST3:00 AM EDT
Clocks move forward 1 hour
Sunday, November 1, 2026past
Daylight saving time ends
2:00 AM EDT1:00 AM EST
Clocks move back 1 hour

Future clock changes, 2027–2030

USA daylight saving time Clock changes worldwide

Sun & Moon details

Sunrise: 6:44 AM
Solar noon: 11:37 AM
Sunset: 4:29 PM
Daylight duration: 9 hr 45 min2 min 10 sec shorter than the previous day

Civil twilight: 6:14 AM – 5:00 PM
Nautical twilight: 5:39 AM – 5:34 PM
Astronomical twilight: 5:06 AM – 6:07 PM

First QuarterMoon illumination33%

View full Sun & Moon detailsHide full Sun & Moon details

Sunday, November 15, 2026

View Williamstown on Savvy Time's time-zone map

Sun

Sunrise: 6:44 AM (southeast, 114.8°)
Sunset: 4:29 PM (southwest, 245.0°)
Day length: 9 hr 45 min2 min 10 sec shorter than the previous day
Solar noon: 11:37 AM (28.7° altitude)

Civil twilight

Dawn to dusk: 6:14 AM – 5:00 PM

Additional twilight

Nautical dawn to dusk: 5:39 AM – 5:34 PM
Astronomical dawn to dusk: 5:06 AM – 6:07 PM

Moon

Phase: First Quarter (33% illuminated)
Moonrise: 12:03 PM (southeast, 119.4°)
Moonset: 9:40 PM (southwest, 242.8°)
Previous principal phase: New Moon — Monday, November 9, 2026 at 2:02 AM
Next principal phase: First Quarter — Tuesday, November 17, 2026 at 6:48 AM

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local date	Sunrise	Sunset	Day length	Daily change
Sunday, November 15	6:44 AM	4:29 PM	9 hr 45 min	2 min 10 sec shorter than the previous day
Monday, November 16	6:45 AM	4:28 PM	9 hr 43 min	2 min 7 sec shorter than the previous day
Tuesday, November 17	6:47 AM	4:28 PM	9 hr 41 min	2 min 6 sec shorter than the previous day
Wednesday, November 18	6:48 AM	4:27 PM	9 hr 39 min	2 min 3 sec shorter than the previous day
Thursday, November 19	6:49 AM	4:26 PM	9 hr 37 min	2 min shorter than the previous day
Friday, November 20	6:50 AM	4:25 PM	9 hr 35 min	1 min 58 sec shorter than the previous day
Saturday, November 21	6:52 AM	4:25 PM	9 hr 33 min	1 min 56 sec shorter than the previous day

Weather forecast for Williamstown

Loading weather forecast…

Plan around Williamstown

Upcoming public holidays in Massachusetts

Thu, Nov 26, 2026Thanksgiving Day
Fri, Dec 25, 2026Christmas Day
Fri, Jan 1, 2027New Year's Day

Nearby places

Browse places in USA

Frequently asked questions

What time zone is Williamstown in?: Williamstown uses Eastern Standard Time (EST, UTC−5) in winter and Eastern Daylight Time (EDT, UTC−4) in summer. Its IANA time zone is America/New_York.
When is the next clock change in Williamstown?: Clocks in Williamstown move forward 1 hour on Sunday, March 14, 2027 at 2:00 AM, changing from EST (UTC−05:00) to EDT (UTC−04:00)
Does Williamstown observe daylight saving time?: Yes. Williamstown observes daylight saving time: EDT (UTC−4) in summer and EST (UTC−5) in winter.
What is the UTC offset of Williamstown?: Williamstown is UTC−5 in winter and UTC−4 in summer