UTC to GMT converter

Coordinated Universal Time (UTC) is UTC+0 with no daylight saving. It covers the global reference used in aviation, computing and science.

UK Time (GMT) is UTC+0 and observes British Summer Time (BST, UTC+1, roughly March–October). It covers London, Manchester and Edinburgh.

UK Time usually shows the same clock time as Coordinated Universal Time, though daylight saving can shift the difference by an hour at some times of year.

Best time to call UK Time from Coordinated Universal Time

Office hours overlap for about 8 hours a day: 9:00 AM–5:00 PM in Coordinated Universal Time is 9:00 AM–5:00 PM in UK 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.