1. Eastern Standard Time (EST) in the US vs. Greenwich Mean Time (GMT) in the UK:
- During Standard Time (October to March), EST is 5 hours behind GMT.
- For example, if it's 12:00 PM EST in New York, it would be 5:00 PM GMT in London.
2. Eastern Daylight Time (EDT) in the US vs. British Summer Time (BST) in the UK:
- During Daylight Saving Time (March to October), EDT is 4 hours behind BST.
- For example, if it's 12:00 PM EDT in New York during Daylight Saving Time, it would be 4:00 PM BST in London.
Time differences with specific cities:
- New York City (EST/EDT) vs. London (GMT/BST): Time difference is 5 hours during Standard Time and 4 hours during Daylight Saving Time.
- Los Angeles (PST/PDT) vs. London (GMT/BST): Time difference is 8 hours during Standard Time and 7 hours during Daylight Saving Time.
- Chicago (CST/CDT) vs. London (GMT/BST): Time difference is 6 hours during Standard Time and 5 hours during Daylight Saving Time.
Note: These are general time differences, and specific time zones may vary for remote areas or locations that don't observe Daylight Saving Time. It's always a good idea to verify the exact time difference based on the specific locations you're comparing and the time of year.