What is the Mountain Time Zone?
The Mountain Time zone is an area 7 hours behind Greenwich Mean Time (GMT-7) during the winter months (referred to as MST - Mountain Standard Time) and 6 hours behind Greenwich Mean Time (GMT-6) during the summer months (referred to as MDT - Mountain Daylight Time).
Do clocks in the Mountain Time Zone observe Daylight Saving Time?
In most states in the USA and in most provinces in Canada, Daylight Saving Time (DST) is observed. During DST the time is shifted forward by 1 hour to Mountain Daylight Time (MDT); which is 6 hours behind Greenwich Mean Time (GMT-6).
After the Summer months Mountain Time is shifted back by 1 hour to US Mountain Standard Time (MST) or (GMT-7).
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