Current Time in Groton, Brown County, South Dakota, USA

2:18:28 AM

02:18:28

CDT (Central Daylight Time) · UTC−05:00

America/Chicago

Clock format
Compare Groton timeView Groton on map
Time zone details

Groton is observing daylight saving time in 2026

Daylight in Groton

Sunrise8:07 AMSolar noon1:16 PMSunset6:23 PM
Next clock changeNov 1, 2026 · Clocks move back 1 hour · in 2 days 23 hoursUpcomingView detailsWeather nowLoading current forecast…Forecast details

Location facts

Place

Country
USA
State
South Dakota
County
Brown County
Place type
Populated place
Country currency
US Dollar (USD)

Practical

Country languages
English, Spanish, Hawaiian, French
Dialing code
+1
Population
1,508
Elevation
397 m

Geography

Geographic coordinates
45° 26' N / 98° 05' W
View on map

Convert Groton time

Compare Groton with another city or time zone

Clock changes in Groton

Next clock change

Upcoming

2:00 AM CDT1:00 AM CST

Clocks move back 1 hour

2026

  1. past

    Daylight saving time starts

    2:00 AM CST3:00 AM CDT

    Clocks move forward 1 hour

  2. upcoming

    Daylight saving time ends

    2:00 AM CDT1:00 AM CST

    Clocks move back 1 hour

Future clock changes, 2027–2030
USA daylight saving timeClock changes worldwide

Sun & Moon details

Sun

Sunrise
Solar noon
Sunset
Daylight duration
10 hr 16 min2 min 53 sec shorter than the previous day

Twilight

Civil twilight
–
Nautical twilight
–
Astronomical twilight
–
Waning GibbousMoon illumination83%
View full Sun & Moon detailsHide full Sun & Moon details

Thursday, October 29, 2026

View Groton on SavvyTime's time-zone map

Sun

Sunrise
Sunset
Day length
10 hr 16 min2 min 53 sec shorter than the previous day
Solar noon
(30.9° altitude)

Civil twilight

Dawn to dusk
–

Additional twilight

Nautical dawn to dusk
–
Astronomical dawn to dusk
–

Moon

Phase
Waning Gibbous (83% illuminated)
Moonrise
Moonset
Previous principal phase
Full Moon — Sunday, October 25, 2026 at
Next principal phase
Third Quarter — Sunday, November 1, 2026 at

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local dateSunriseSunsetDay lengthDaily change
10 hr 16 min2 min 53 sec shorter than the previous day
10 hr 13 min2 min 53 sec shorter than the previous day
10 hr 10 min2 min 51 sec shorter than the previous day
10 hr 07 min2 min 51 sec shorter than the previous day
10 hr 04 min2 min 48 sec shorter than the previous day
10 hr 02 min2 min 48 sec shorter than the previous day
9 hr 59 min2 min 46 sec shorter than the previous day

Weather forecast for Groton

Temperature unit

Loading weather forecast…

Plan around Groton

Upcoming public holidays in South Dakota

  1. Veterans Day
  2. Thanksgiving Day
  3. Christmas Day

Nearby places

AberdeenBrown County30 kmWWatertownCodington County98 kmSE
Browse places in USA

Frequently asked questions

What time zone is Groton in?
Groton uses Central Standard Time (CST, UTC−6) in winter and Central Daylight Time (CDT, UTC−5) in summer. Its IANA time zone is America/Chicago.
When is the next clock change in Groton?
Clocks in Groton move backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from CDT (UTC−05:00) to CST (UTC−06:00)
Does Groton observe daylight saving time?
Yes. Groton observes daylight saving time: CDT (UTC−5) in summer and CST (UTC−6) in winter.
What is the UTC offset of Groton?
Groton is UTC−6 in winter and UTC−5 in summer