London is 5 hours ahead of Raleigh during most of the year. Raleigh uses Eastern Time (ET, UTC-5/-4) while London uses Greenwich Mean Time/British Summer Time (GMT/BST, UTC+0/+1). When it's 12:00 PM in Raleigh, it's 5:00 PM in London.
The difference may temporarily change to 4 or 6 hours during the brief periods when the US and UK change clocks on different dates.
Best calling time: 8:00 AM - 12:00 PM Raleigh time. This corresponds to 1:00 PM - 5:00 PM in London, covering afternoon business hours.
Raleigh's Research Triangle has growing international business connections with UK pharmaceutical and tech companies. Several British firms have invested in North Carolina's research and development sector.