GMT to MST converter
UK Time → Mountain Time
Loading current times…
UK Time (GMT) is UTC+0 and observes British Summer Time (BST, UTC+1, roughly March–October). It covers London, Manchester and Edinburgh.
Mountain Time (MST) is UTC−7 and observes daylight saving (MDT, UTC−6, roughly March–November). It covers Denver, Salt Lake City and Calgary.
Mountain Time is typically 7 hours behind UK Time, though daylight saving can shift the difference by an hour at some times of year.
Best time to call Mountain Time from UK Time
Office hours overlap for about 1 hour a day: 4:00 PM–5:00 PM in UK Time is 9:00 AM–10:00 AM in Mountain Time. Book calls inside this window and nobody is out of hours. Daylight saving can shift these times by an hour at some points in the year.
GMT to MST, hour by hour
Today's actual offsets. Rows where both zones are inside 9am–5pm working hours are highlighted.