London is 5 hours ahead of New York. This can vary for a few weeks in March/April and October/November when they change clocks for Daylight Saving Time on different dates. Use our Time Zone Converter for the live difference.
Time Difference: New York vs. London
The time difference between New York and London is one of the most frequently checked conversions for business and travel. London is generally 5 hours ahead of New York.
Quick Answer
London is usually 5 hours ahead of New York. For example, when it is noon in New York, it is 5 PM in London. This can change slightly for a few weeks a year because they start and end Daylight Saving Time on different dates.
Related Questions
What is UTC (Coordinated Universal Time)?
UTC is the primary time standard by which the world regulates clocks. It's the successor to GMT and is based on atomic time for precision.
What is Daylight Saving Time (DST)?
DST is the practice of advancing clocks by one hour during warmer months to extend daylight into the evening.
What does GMT stand for?
GMT stands for Greenwich Mean Time, the historic time standard based on the Prime Meridian in Greenwich, London.
What are leap seconds?
A leap second is a one-second adjustment added to UTC to keep it in sync with the Earth's irregular rotation.