La estructura de zona horaria de este país.
The UK — GMT in winter, BST in summer
The UK observes GMT (UTC+0) in winter and BST (UTC+1) in summer, flipping on the last Sunday of March and October. The DST transition is called "British Summer Time" formally but casually "the clocks going forward / back". London anchors the European trading day for financial services, sits 5 h ahead of New York and 5.5 h behind Mumbai. Business hours 9 AM - 5:30 PM typically; the City of London 's trading floors open at 8 AM.