London, United Kingdom

London follows Greenwich Mean Time (GMT) at UTC+0 in winter and British Summer Time (BST) at UTC+1 from late March through October. The Royal Observatory in Greenwich literally defines the prime meridian.

London’s trading day bridges the gap between Asian markets closing and American markets opening. At noon in London, it is 7 AM in New York, 9 PM in Tokyo, and 8 PM in Singapore.

As one of the world’s top three financial centers alongside New York and Tokyo, London’s position at UTC+0 makes it the natural meeting point for global business scheduling.