The Time in South Dakota
South Dakota actually has 2 time zones — the Mountain and Central Time Zones to be exact. As a general rule, one could say that South Dakota is split down the middle with the western half (left side) being in the Mountain Time Zone while the eastern half (right side) being in the Central Time Zone.
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What Time Is It In South Dakota? There Are 2 Time Zones
There are, in total, 66 counties in South Dakota. Of these 66 counties, 15 are 100% in the Mountain Time Zone while 50 counties are 100% in the Central Time Zone. Most on Stanley County is located in the Mountain Time Zone but a small portion of Stanley County is located in the Central Time Zone.
Although 50 counties (75% of the counties in South Dakota) are located in the Central Time Zone, these counties are smaller in size compared to the 16 counties, if you include Stanley County, that are located in the Mountain Time Zone. Thus, although fewer counties are in the Mountain Time Zone, South Dakota is still split approximately down the middle between the Mountain and Central Time Zones.
From a geographical point of view, South Dakota stretches from approximately 96° West to 104° West. Thus, South Dakota spans approximately 8° of longitude. As a general rule, all counties west of 101° West longitude are in the Mountain Time Zone. With this realization we can see how, from a geographical point of view, approximately 1/2 of South Dakota is in the Mountain Time Zone even if 75% of its counties are in the Central Time Zone.
→ Learn more about the counties in South Dakota
|A map of South Dakota. You can also download this map in PDF format.|
The 2 Time Zones in South Dakota
|Time Zone||Major Cities|
|Central Time||Aberdeen, Beresford, Brandon, Brookings, Canton, Chamberlain, Dakota Dunes, Flandreau, Harrisburg, Huron, Madison, Milbank, Mitchell, Mobridge, North Sioux City, Pierre, Sioux Falls, Sisseton, Tea, Vermillion, Watertown, Winner, Yankton|
|Mountain Time||Belle Fourche, Blackhawk, Custer, Deadwood, Edgemont, Ellsworth Air Force Base, Fort Pierre, Hill City, Hot Springs, Lead, Lemmon, Philip, Pine Ridge, Rapid City, Spearfish, Sturgis, Wall|
Time Zone Data
|Standard Time||Daylight Saving Time|
|Central Standard Time||CST||GMT -6||Central Daylight Time||CDT||GMT -5|
|Mountain Standard Time||MST||GMT -7||Mountain Daylight Time||MDT||GMT -6|
| Notice how the left half (western half) is yellow indicating those locations are in the |
Mountain Time Zonewhile the right half (eastern half) is in the Central Time Zone.
Daylight Saving Time
All of South Dakota observes daylight saving time (DST).
Daylight saving time (DST) schedule:
→ At 2 AM local time, clocks are advanced 1 hour on the second Sunday in March.
→ At 2 AM local time, clocks go back 1 hour on the first Sunday in November.
South Dakota Time Zone Chart
By using the following time zone chart you can see the time differences between the 4 main time zones in the United States including the Central Time Zone (most of South Dakota) and the Mountain Time Zone (a small portion of South Dakota).
Click a heading to sort the table.
|Eastern Time||Central Time||Mountain Time||Pacific Time|
|00:00||12:00 AM||23:00||11:00 PM||22:00||10:00 PM||21:00||9:00 PM|
|01:00||1:00 AM||00:00||12:00 AM||23:00||11:00 PM||22:00||10:00 PM|
|02:00||2:00 AM||01:00||1:00 AM||00:00||12:00 AM||23:00||11:00 PM|
|03:00||3:00 AM||02:00||2:00 AM||01:00||1:00 AM||00:00||12:00 AM|
|04:00||4:00 AM||03:00||3:00 AM||02:00||2:00 AM||01:00||1:00 AM|
|05:00||5:00 AM||04:00||4:00 AM||03:00||3:00 AM||02:00||2:00 AM|
|06:00||6:00 AM||05:00||5:00 AM||04:00||4:00 AM||03:00||3:00 AM|
|07:00||7:00 AM||06:00||6:00 AM||05:00||5:00 AM||04:00||4:00 AM|
|08:00||8:00 AM||07:00||7:00 AM||06:00||6:00 AM||05:00||5:00 AM|
|09:00||9:00 AM||08:00||8:00 AM||07:00||7:00 AM||06:00||6:00 AM|
|10:00||10:00 AM||09:00||9:00 AM||08:00||8:00 AM||07:00||7:00 AM|
|11:00||11:00 AM||10:00||10:00 AM||09:00||9:00 AM||08:00||8:00 AM|
|12:00||12:00 PM||11:00||11:00 AM||10:00||10:00 AM||09:00||9:00 AM|
|13:00||1:00 PM||12:00||12:00 PM||11:00||11:00 AM||10:00||10:00 AM|
|14:00||2:00 PM||13:00||1:00 PM||12:00||12:00 PM||11:00||11:00 AM|
|15:00||3:00 PM||14:00||2:00 PM||13:00||1:00 PM||12:00||12:00 PM|
|16:00||4:00 PM||15:00||3:00 PM||14:00||2:00 PM||13:00||1:00 PM|
|17:00||5:00 PM||16:00||4:00 PM||15:00||3:00 PM||14:00||2:00 PM|
|18:00||6:00 PM||17:00||5:00 PM||16:00||4:00 PM||15:00||3:00 PM|
|19:00||7:00 PM||18:00||6:00 PM||17:00||5:00 PM||16:00||4:00 PM|
|20:00||8:00 PM||19:00||7:00 PM||18:00||6:00 PM||17:00||5:00 PM|
|21:00||9:00 PM||20:00||8:00 PM||19:00||7:00 PM||18:00||6:00 PM|
|22:00||10:00 PM||21:00||9:00 PM||20:00||8:00 PM||19:00||7:00 PM|
|23:00||11:00 PM||22:00||10:00 PM||21:00||9:00 PM||20:00||8:00 PM|