What time zone is Ellsworth Air Force Base in?

Ellsworth Air Force Base uses Mountain Standard Time (MST, UTC−7) in winter and Mountain Daylight Time (MDT, UTC−6) in summer. Its IANA time zone is America/Denver.

When is the next clock change in Ellsworth Air Force Base?

Clocks in Ellsworth Air Force Base move backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from MDT (UTC−06:00) to MST (UTC−07:00)

Does Ellsworth Air Force Base observe daylight saving time?

Yes. Ellsworth Air Force Base observes daylight saving time: MDT (UTC−6) in summer and MST (UTC−7) in winter.

What is the UTC offset of Ellsworth Air Force Base?

Ellsworth Air Force Base is UTC−7 in winter and UTC−6 in summer

Current Time in Ellsworth Air Force Base, Pennington County, South Dakota, USA

1:18:52 AM

01:18:52

Thursday, October 29, 2026

MDT (Mountain Daylight Time) · UTC−06:00

America/Denver

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Time zone details

Ellsworth Air Force Base is observing daylight saving time in 2026

Daylight in Ellsworth Air Force Base

Sunrise7:25 AMSolar noon12:35 PMSunset5:45 PM

Next clock changeNov 1, 2026 · Clocks move back 1 hour · in 3 daysUpcomingView details Weather nowLoading current forecast…Forecast details

Location facts

Place

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

Practical

Country languages: English, Spanish, Hawaiian, French
Dialing code: +1
Population: 8,000
Elevation: 972 m

Geography

Geographic coordinates: 44° 08' N / 103° 04' W

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Clock changes in Ellsworth Air Force Base

Next clock change

Upcoming

Sunday, November 1, 2026

2:00 AM MDT1:00 AM MST

Clocks move back 1 hour

Sunday, March 8, 2026past
Daylight saving time starts
2:00 AM MST3:00 AM MDT
Clocks move forward 1 hour
Sunday, November 1, 2026upcoming
Daylight saving time ends
2:00 AM MDT1:00 AM MST
Clocks move back 1 hour

Future clock changes, 2027–2030

USA daylight saving time Clock changes worldwide

Sun & Moon details

Sunrise: 7:25 AM
Solar noon: 12:35 PM
Sunset: 5:45 PM
Daylight duration: 10 hr 20 min2 min 46 sec shorter than the previous day

Civil twilight: 6:55 AM – 6:16 PM
Nautical twilight: 6:21 AM – 6:50 PM
Astronomical twilight: 5:47 AM – 7:23 PM

Waning GibbousMoon illumination83%

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Thursday, October 29, 2026

View Ellsworth Air Force Base on SavvyTime's time-zone map

Sun

Sunrise: 7:25 AM (east, 108.3°)
Sunset: 5:45 PM (west, 251.5°)
Day length: 10 hr 20 min2 min 46 sec shorter than the previous day
Solar noon: 12:35 PM (32.2° altitude)

Civil twilight

Dawn to dusk: 6:55 AM – 6:16 PM

Additional twilight

Nautical dawn to dusk: 6:21 AM – 6:50 PM
Astronomical dawn to dusk: 5:47 AM – 7:23 PM

Moon

Phase: Waning Gibbous (83% illuminated)
Moonrise: 8:18 PM (northeast, 49.9°)
Moonset: 11:59 AM (northwest, 310.3°)
Previous principal phase: Full Moon — Sunday, October 25, 2026 at 10:12 PM
Next principal phase: Third Quarter — Sunday, November 1, 2026 at 1:28 PM

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local date	Sunrise	Sunset	Day length	Daily change
Thursday, October 29	7:25 AM	5:45 PM	10 hr 20 min	2 min 46 sec shorter than the previous day
Friday, October 30	7:26 AM	5:44 PM	10 hr 17 min	2 min 44 sec shorter than the previous day
Saturday, October 31	7:28 AM	5:42 PM	10 hr 15 min	2 min 44 sec shorter than the previous day
Sunday, November 1	6:29 AM	4:41 PM	10 hr 12 min	2 min 42 sec shorter than the previous day
Monday, November 2	6:30 AM	4:40 PM	10 hr 09 min	2 min 41 sec shorter than the previous day
Tuesday, November 3	6:32 AM	4:38 PM	10 hr 07 min	2 min 39 sec shorter than the previous day
Wednesday, November 4	6:33 AM	4:37 PM	10 hr 04 min	2 min 38 sec shorter than the previous day

Weather forecast for Ellsworth Air Force Base

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Plan around Ellsworth Air Force Base

Upcoming public holidays in South Dakota

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 Ellsworth Air Force Base in?: Ellsworth Air Force Base uses Mountain Standard Time (MST, UTC−7) in winter and Mountain Daylight Time (MDT, UTC−6) in summer. Its IANA time zone is America/Denver.
When is the next clock change in Ellsworth Air Force Base?: Clocks in Ellsworth Air Force Base move backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from MDT (UTC−06:00) to MST (UTC−07:00)
Does Ellsworth Air Force Base observe daylight saving time?: Yes. Ellsworth Air Force Base observes daylight saving time: MDT (UTC−6) in summer and MST (UTC−7) in winter.
What is the UTC offset of Ellsworth Air Force Base?: Ellsworth Air Force Base is UTC−7 in winter and UTC−6 in summer