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

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

11:25:22 PM

23:25:22

Thursday, November 5, 2026

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

America/New_York

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Time zone details

Cold Spring Harbor is currently on standard time; daylight saving time is observed in 2026

Daylight in Cold Spring Harbor

Sunrise6:29 AMSolar noon11:37 AMSunset4:45 PM

Next clock changeMar 14, 2027 · Clocks move forward 1 hour · in 128 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, 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: 6:29 AM
Solar noon: 11:37 AM
Sunset: 4:45 PM
Daylight duration: 10 hr 16 min2 min 18 sec shorter than the previous day

Civil twilight: 6:00 AM – 5:13 PM
Nautical twilight: 5:27 AM – 5:46 PM
Astronomical twilight: 4:55 AM – 6:18 PM

Waning CrescentMoon illumination13%

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Thursday, November 5, 2026

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

Sun

Sunrise: 6:29 AM (east, 110.3°)
Sunset: 4:45 PM (west, 249.5°)
Day length: 10 hr 16 min2 min 18 sec shorter than the previous day
Solar noon: 11:37 AM (33.3° altitude)

Civil twilight

Dawn to dusk: 6:00 AM – 5:13 PM

Additional twilight

Nautical dawn to dusk: 5:27 AM – 5:46 PM
Astronomical dawn to dusk: 4:55 AM – 6:18 PM

Moon

Phase: Waning Crescent (13% illuminated)
Moonrise: 2:41 AM (east, 91.1°)
Moonset: 2:45 PM (west, 264.8°)
Previous principal phase: Third Quarter — Sunday, November 1, 2026 at 3:28 PM
Next principal phase: New Moon — Monday, November 9, 2026 at 2:02 AM

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local date	Sunrise	Sunset	Day length	Daily change
Thursday, November 5	6:29 AM	4:45 PM	10 hr 16 min	2 min 18 sec shorter than the previous day
Friday, November 6	6:30 AM	4:44 PM	10 hr 14 min	2 min 17 sec shorter than the previous day
Saturday, November 7	6:31 AM	4:42 PM	10 hr 11 min	2 min 16 sec shorter than the previous day
Sunday, November 8	6:32 AM	4:41 PM	10 hr 09 min	2 min 14 sec shorter than the previous day
Monday, November 9	6:33 AM	4:40 PM	10 hr 07 min	2 min 12 sec shorter than the previous day
Tuesday, November 10	6:35 AM	4:39 PM	10 hr 05 min	2 min 11 sec shorter than the previous day
Wednesday, November 11	6:36 AM	4:38 PM	10 hr 03 min	2 min 9 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

Wed, Nov 11, 2026Veterans Day
Thu, Nov 26, 2026Thanksgiving Day
Fri, Dec 25, 2026Christmas 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 forward 1 hour on Sunday, March 14, 2027 at 2:00 AM, changing from EST (UTC−05:00) to EDT (UTC−04:00)
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