Time Difference Between London and Newark: A Quick Reference

Coordinating across the Atlantic? Here's the essential time-zone math between London (UK) and Newark, New Jersey (US Eastern Time).

Standard Time (Winter)

• London: Greenwich Mean Time (GMT / UTC+0)
• Newark: Eastern Standard Time (EST / UTC-5)
• Difference: London is 5 hours ahead of Newark
• Example: 12:00 PM in Newark = 5:00 PM in London

Daylight Saving Time (Summer)

• London: British Summer Time (BST / UTC+1) — late March to late October
• Newark: Eastern Daylight Time (EDT / UTC-4) — mid-March to early November
• Difference: London is 4 hours ahead of Newark during the overlapping DST period
• Example: 12:00 PM in Newark = 4:00 PM in London

Watch the Transition Weeks

Because the UK and US switch clocks on different weekends (UK: last Sunday in March/October; US: second Sunday in March / first Sunday in November), there are brief periods each year when the gap is 4 or 5 hours depending on the exact date. Always verify with a world-clock tool when scheduling meetings near the transitions.

Quick Conversion Tip

Add 5 hours (winter) or 4 hours (summer) to Newark time to get London time. Or subtract to go the other way.