What is the ISO week number in Spearfish?

TimeDials shows the current ISO week number for Spearfish in real time. ISO week numbers follow the ISO 8601 standard, where week 1 is the week containing the first Thursday of the year.

Does Spearfish observe daylight saving time (DST)?

Yes, Spearfish observes daylight saving time. The next clock change is on 2026-11-01 (clocks move back to GMT-7).

Time in Spearfish, South Dakota, United States — Local Time & Date

Live

--:--:--

Current local time in 🇺🇸 Spearfish, South Dakota, United States.

MST/MDT UTC-06:00

Relative to You

Detecting your timezone…

Relative to UTC

-6 hours behind

Noon here = 18:00 UTC

09:00 here = 15:00 UTC

12:00 here = 18:00 UTC

17:00 here = 23:00 UTC

ISO Week

11 Odd Week

Sun

07:12

18:39

Today

Spearfish is waking up — early risers grab coffee before the day begins. The current offset is UTC-06:00.

Daylight Saving Time

Last Clock Change

2026-03-08

Clocks moved forward to GMT-6

Next Clock Change

2026-11-01

Clocks will move back to GMT-7

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Quick Facts

Country	🇺🇸United States
State / Region	South Dakota
Timezone	MST/MDT
UTC Offset	UTC-06:00
DST	Yes — daylight saving time observed
Population	11,283
Elevation	1,110 m
Sunrise	07:12
Sunset	18:39
Coordinates	44.49°N, -103.86°E

Map

Map data © OpenStreetMap contributors

Time Difference to Major Cities

City	Difference	Local Time
New York	+2h	--:--
Los Angeles	-1h	--:--
London	+6h	--:--
Paris	+7h	--:--
Dubai	+10h	--:--
Mumbai	+11h 30m	--:--
Singapore	+14h	--:--
Tokyo	+15h	--:--
Sydney	+17h	--:--
Sao Paulo	+3h	--:--
Cairo	+8h	--:--
Shanghai	+14h	--:--

Frequently Asked Questions

What are the business hours in Spearfish?

Standard business hours in Spearfish are 09:00–17:00 local time (MST/MDT). Check the live clock above to see the current local time. Use our Time Zone Planner to find the best meeting time across cities.

What is the UTC offset for Spearfish?

Spearfish is currently at UTC-06:00. The timezone identifier is MST/MDT. When it is noon in Spearfish, it is 18:00 UTC. You can embed a live Spearfish clock on your website.

What ISO week number is it in Spearfish?

It is currently ISO week 11 (odd week) in Spearfish. ISO week numbers follow the ISO 8601 standard, where week 1 is the week containing the first Thursday of the year. Learn more about ISO week numbers.

Does Spearfish observe daylight saving time?

Yes, Spearfish observes daylight saving time (DST). The most recent change was on 2026-03-08, when clocks moved forward to GMT-6. The next change is on 2026-11-01, when clocks will move back to GMT-7.