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

9:47:33 PM

21:47:33

CST (Central Standard Time) · UTC−06:00

America/Chicago

Clock format
Compare Groton timeView Groton on map
Time zone details

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

Daylight in Groton

Sunrise7:30 AMSolar noon12:16 PMSunset5:02 PM
Next clock changeMar 14, 2027 · Clocks move forward 1 hour · in 119 daysUpcomingView 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 CST3:00 AM CDT

Clocks move forward 1 hour

2026

  1. past

    Daylight saving time starts

    2:00 AM CST3:00 AM CDT

    Clocks move forward 1 hour

  2. past

    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
9 hr 33 min2 min 27 sec shorter than the previous day

Twilight

Civil twilight
–
Nautical twilight
–
Astronomical twilight
–
Waxing CrescentMoon illumination25%
View full Sun & Moon detailsHide full Sun & Moon details

Saturday, November 14, 2026

View Groton on Savvy Time's time-zone map

Sun

Sunrise
Sunset
Day length
9 hr 33 min2 min 27 sec shorter than the previous day
Solar noon
(26.2° altitude)

Civil twilight

Dawn to dusk
–

Additional twilight

Nautical dawn to dusk
–
Astronomical dawn to dusk
–

Moon

Phase
Waxing Crescent (25% illuminated)
Moonrise
Moonset
Previous principal phase
New Moon — Monday, November 9, 2026 at
Next principal phase
First Quarter — Tuesday, November 17, 2026 at

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local dateSunriseSunsetDay lengthDaily change
9 hr 33 min2 min 27 sec shorter than the previous day
9 hr 30 min2 min 24 sec shorter than the previous day
9 hr 28 min2 min 22 sec shorter than the previous day
9 hr 26 min2 min 20 sec shorter than the previous day
9 hr 23 min2 min 16 sec shorter than the previous day
9 hr 21 min2 min 15 sec shorter than the previous day
9 hr 19 min2 min 11 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. Thanksgiving Day
  2. Christmas Day
  3. New Year's 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 forward 1 hour on Sunday, March 14, 2027 at 2:00 AM, changing from CST (UTC−06:00) to CDT (UTC−05:00)
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