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 backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from EDT (UTC−04:00) to EST (UTC−05:00)

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, Dauphin County, Pennsylvania, USA

8:29:02 AM

08:29:02

Sunday, October 25, 2026

EDT (Eastern Daylight Time) · UTC−04:00

America/New_York

Compare Williamstown time View Williamstown on map

Time zone details

Williamstown is observing daylight saving time in 2026

Daylight in Williamstown

Sunrise7:28 AMSolar noon12:50 PMSunset6:11 PM

Next clock changeNov 1, 2026 · Clocks move back 1 hour · in 6 days 17 hoursUpcomingView details Weather nowLoading current forecast…Forecast details

Location facts

Place

Country: USA
State: Pennsylvania
County: Dauphin County
Place type: Populated place
Country currency: US Dollar (USD)

Practical

Country languages: English, Spanish, Hawaiian, French
Dialing code: +1
Population: 1,375
Elevation: 223 m

Geography

Geographic coordinates: 40° 34' N / 76° 37' W

View on map

Convert Williamstown time

Compare Williamstown with another city or time zone

Clock changes in Williamstown

Next clock change

Upcoming

Sunday, November 1, 2026

2:00 AM EDT1:00 AM EST

Clocks move back 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, 2026upcoming
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: 7:28 AM
Solar noon: 12:50 PM
Sunset: 6:11 PM
Daylight duration: 10 hr 43 min2 min 29 sec shorter than the previous day

Civil twilight: 7:00 AM – 6:39 PM
Nautical twilight: 6:28 AM – 7:11 PM
Astronomical twilight: 5:57 AM – 7:43 PM

Full MoonMoon illumination100%

View full Sun & Moon detailsHide full Sun & Moon details

Sunday, October 25, 2026

View Williamstown on SavvyTime's time-zone map

Sun

Sunrise: 7:28 AM (east, 105.4°)
Sunset: 6:11 PM (west, 254.4°)
Day length: 10 hr 43 min2 min 29 sec shorter than the previous day
Solar noon: 12:50 PM (37.2° altitude)

Civil twilight

Dawn to dusk: 7:00 AM – 6:39 PM

Additional twilight

Nautical dawn to dusk: 6:28 AM – 7:11 PM
Astronomical dawn to dusk: 5:57 AM – 7:43 PM

Moon

Phase: Full Moon (100% illuminated)
Moonrise: 5:37 PM (east, 70.0°)
Moonset: 6:50 AM (west, 286.5°)
Previous principal phase: First Quarter — Sunday, October 18, 2026 at 12:13 PM
Next principal phase: Full Moon — Monday, October 26, 2026 at 12:12 AM

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local date	Sunrise	Sunset	Day length	Daily change
Sunday, October 25	7:28 AM	6:11 PM	10 hr 43 min	2 min 29 sec shorter than the previous day
Monday, October 26	7:29 AM	6:10 PM	10 hr 41 min	2 min 28 sec shorter than the previous day
Tuesday, October 27	7:30 AM	6:09 PM	10 hr 38 min	2 min 28 sec shorter than the previous day
Wednesday, October 28	7:32 AM	6:07 PM	10 hr 36 min	2 min 26 sec shorter than the previous day
Thursday, October 29	7:33 AM	6:06 PM	10 hr 33 min	2 min 25 sec shorter than the previous day
Friday, October 30	7:34 AM	6:05 PM	10 hr 31 min	2 min 25 sec shorter than the previous day
Saturday, October 31	7:35 AM	6:04 PM	10 hr 28 min	2 min 23 sec shorter than the previous day

Weather forecast for Williamstown

Loading weather forecast…

Plan around Williamstown

Upcoming public holidays in Pennsylvania

Wed, Nov 11, 2026Veterans Day
Thu, Nov 26, 2026Thanksgiving Day
Fri, Dec 25, 2026Christmas 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 backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from EDT (UTC−04:00) to EST (UTC−05:00)
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