How it works
The converter uses the time zone database built into your phone or browser, so daylight saving changes apply on the right dates for each place.
The US and Europe change clocks on different weekends in March and October/November, so for a couple of weeks a year New York is 4 hours behind London instead of 5.
Worked example
9:00 AM in New York on October 21, 2026 (EDT, UTC−4) is 2:00 PM in London (BST, UTC+1), 6:30 PM in India and 6:00 AM in Los Angeles.
Frequently asked questions
How many hours ahead is London from New York?
Usually 5. For a few weeks in March and late October/early November it's 4, because the US and UK change clocks on different dates.
What's the difference between EST and EDT?
EST (UTC−5) is winter time on the US East Coast; EDT (UTC−4) is summer daylight time.
Does India have daylight saving time?
No. India Standard Time is UTC+5:30 all year.
What time zone is Israel?
Israel uses UTC+2 in winter and UTC+3 in summer.