SD · 53 sample points
What Time Zone Is Dewey County, South Dakota
Dewey County is in Mountain Time (America/Denver). Mountain Time observes daylight saving time.
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Questions
What time zone is Dewey County, South Dakota?
Dewey County is in Mountain Time (America/Denver).
Does Dewey County observe daylight saving time?
Mountain Time observes daylight saving time.
How many South Dakota counties share this clock?
16 of 66 counties in South Dakota use Mountain Time as their main result.
Estimates only
The percentage is a sample of the county outline, not a survey of addresses.
49 CFR Part 71 controls the legal line.