| Year | Start Date | End Date |
|---|
| 2010 | Sunday, April 4 at 2:00 AM | Sunday, October 31 at 2:00 AM | | 2011 | Sunday, April 3 at 2:00 AM | Sunday, October 30 at 2:00 AM | | 2012 | Sunday, April 1 at 2:00 AM | Sunday, October 28 at 2:00 AM | | 2013 | Sunday, April 7 at 2:00 AM | Sunday, October 27 at 2:00 AM | | 2014 | Sunday, April 6 at 2:00 AM | Sunday, October 26 at 2:00 AM | | 2015 | Sunday, April 5 at 2:00 AM | Sunday, October 25 at 2:00 AM | | 2016 | Sunday, April 3 at 2:00 AM | Sunday, October 30 at 2:00 AM | | 2017 | Sunday, April 2 at 2:00 AM | Sunday, October 29 at 2:00 AM | | 2018 | Sunday, April 1 at 2:00 AM | Sunday, October 28 at 2:00 AM | | 2019 | Sunday, April 7 at 2:00 AM | Sunday, October 27 at 2:00 AM |
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Details of each time changeFor each change, two lines are displayed: line #1 is the time and time zone one second before the change line #2 is the time and time zone when the change itself | Local Date | Local Time | DST | UTC Offset | Time Zone | Event/details |
|---|
| Sunday, April 4, 2010 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | More info | | Sunday, October 31, 2010 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | More info | | Sunday, April 3, 2011 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | More info | | Sunday, October 30, 2011 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | More info | | Sunday, April 1, 2012 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | | Sunday, October 28, 2012 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | | Sunday, April 7, 2013 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | | Sunday, October 27, 2013 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | | Sunday, April 6, 2014 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | | Sunday, October 26, 2014 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | | Sunday, April 5, 2015 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | | Sunday, October 25, 2015 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | | Sunday, April 3, 2016 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | | Sunday, October 30, 2016 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | | Sunday, April 2, 2017 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | | Sunday, October 29, 2017 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | | Sunday, April 1, 2018 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | | Sunday, October 28, 2018 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends | | Sunday, April 7, 2019 | 1:59:59 AM | No | UTC-7h | MST | | | 2:00:00 AM → 3:00:00 AM | +1h | UTC-6h | MDT | DST starts | | Sunday, October 27, 2019 | 1:59:59 AM | +1h | UTC-6h | MDT | | | 2:00:00 AM → 1:00:00 AM | No | UTC-7h | MST | DST ends |
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