What time zone is Cold Spring Harbor in?

Cold Spring Harbor 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 Cold Spring Harbor?

Clocks in Cold Spring Harbor 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 Cold Spring Harbor observe daylight saving time?

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

What is the UTC offset of Cold Spring Harbor?

Cold Spring Harbor is UTC−5 in winter and UTC−4 in summer

Current Time in Cold Spring Harbor, Suffolk County, New York, USA

11:37:11 PM

23:37:11

Friday, October 16, 2026

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

America/New_York

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Time zone details

Cold Spring Harbor is observing daylight saving time in 2026

Daylight in Cold Spring Harbor

Sunrise7:06 AMSolar noon12:39 PMSunset6:11 PM

Next clock changeNov 1, 2026 · Clocks move back 1 hour · in 15 daysUpcomingView details Weather nowLoading current forecast…Forecast details

Location facts

Place

Country: USA
State: New York
County: Suffolk County
Place type: Populated place
Country currency: US Dollar (USD)

Practical

Country languages: English, Spanish, Hawaiian, French
Dialing code: +1
Population: 5,070
Elevation: 10 m

Geography

Geographic coordinates: 40° 52' N / 73° 27' W

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Clock changes in Cold Spring Harbor

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: 7:06 AM
Solar noon: 12:39 PM
Sunset: 6:11 PM
Daylight duration: 11 hr 05 min2 min 37 sec shorter than the previous day

Civil twilight: 6:38 AM – 6:39 PM
Nautical twilight: 6:06 AM – 7:11 PM
Astronomical twilight: 5:35 AM – 7:42 PM

First QuarterMoon illumination32%

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Friday, October 16, 2026

View Cold Spring Harbor on SavvyTime's time-zone map

Sun

Sunrise: 7:06 AM (east, 101.2°)
Sunset: 6:11 PM (west, 258.6°)
Day length: 11 hr 05 min2 min 37 sec shorter than the previous day
Solar noon: 12:39 PM (40.1° altitude)

Civil twilight

Dawn to dusk: 6:38 AM – 6:39 PM

Additional twilight

Nautical dawn to dusk: 6:06 AM – 7:11 PM
Astronomical dawn to dusk: 5:35 AM – 7:42 PM

Moon

Phase: First Quarter (32% illuminated)
Moonrise: 1:10 PM (southeast, 128.0°)
Moonset: 9:53 PM (southwest, 232.6°)
Previous principal phase: New Moon — Saturday, October 10, 2026 at 11:50 AM
Next principal phase: First Quarter — Sunday, October 18, 2026 at 12:13 PM

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local date	Sunrise	Sunset	Day length	Daily change
Friday, October 16	7:06 AM	6:11 PM	11 hr 05 min	2 min 37 sec shorter than the previous day
Saturday, October 17	7:07 AM	6:10 PM	11 hr 03 min	2 min 36 sec shorter than the previous day
Sunday, October 18	7:08 AM	6:08 PM	11 hr 00 min	2 min 35 sec shorter than the previous day
Monday, October 19	7:09 AM	6:07 PM	10 hr 58 min	2 min 35 sec shorter than the previous day
Tuesday, October 20	7:10 AM	6:05 PM	10 hr 55 min	2 min 35 sec shorter than the previous day
Wednesday, October 21	7:11 AM	6:04 PM	10 hr 52 min	2 min 33 sec shorter than the previous day
Thursday, October 22	7:13 AM	6:02 PM	10 hr 50 min	2 min 33 sec shorter than the previous day

Weather forecast for Cold Spring Harbor

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Plan around Cold Spring Harbor

Upcoming public holidays in New York

Tue, Nov 3, 2026Election Day
Wed, Nov 11, 2026Veterans Day
Thu, Nov 26, 2026Thanksgiving Day

Nearby places

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Frequently asked questions

What time zone is Cold Spring Harbor in?: Cold Spring Harbor 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 Cold Spring Harbor?: Clocks in Cold Spring Harbor 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 Cold Spring Harbor observe daylight saving time?: Yes. Cold Spring Harbor observes daylight saving time: EDT (UTC−4) in summer and EST (UTC−5) in winter.
What is the UTC offset of Cold Spring Harbor?: Cold Spring Harbor is UTC−5 in winter and UTC−4 in summer