Time Difference Between Calgary and London: Converting 4 PM MT to GMT

Time Zones

• Calgary: Mountain Time (MT) – UTC-7 (MST) / UTC-6 (MDT)
• London: Greenwich Mean Time (GMT) – UTC+0 (GMT) / UTC+1 (BST)

Conversion

During standard time (Nov–Mar): Calgary is UTC-7, London is UTC+0 → 7-hour difference.
4:00 PM MT + 7 hours = 11:00 PM GMT (same day).

During daylight saving (Mar–Nov): Calgary is MDT (UTC-6), London is BST (UTC+1) → 7-hour difference still.
4:00 PM MDT + 7 hours = 11:00 PM BST (same day).

Result

When it is 4 PM in Calgary, it is 11 PM in London year-round.