London to Williamstown time converter

Williamstown is 5 hours behind London. When it is 9:00 AM in London, it is 4:00 AM in Williamstown.

London BST

Monday, October 19, 2026

Williamstown EDT

Sunday, October 18, 2026

London
United Kingdom
Mon, Oct 19
BSTUTC+1
Williamstown
New Jersey, United States
Sun, Oct 18
EDTUTC-4-5h
Finding your time zone…
Shared working hours (9:00–18:00)

London to Williamstown conversion table

Every hour of today in London and the matching time in Williamstown. Light rows are typical working hours (9:00–18:00).

LondonWilliamstown
12:00 AM7:00 PM−1 day
1:00 AM8:00 PM−1 day
2:00 AM9:00 PM−1 day
3:00 AM10:00 PM−1 day
4:00 AM11:00 PM−1 day
5:00 AM12:00 AM
6:00 AM1:00 AM
7:00 AM2:00 AM
8:00 AM3:00 AM
9:00 AM4:00 AM
10:00 AM5:00 AM
11:00 AM6:00 AM
12:00 PM7:00 AM
1:00 PM8:00 AM
2:00 PM9:00 AM
3:00 PM10:00 AM
4:00 PM11:00 AM
5:00 PM12:00 PM
6:00 PM1:00 PM
7:00 PM2:00 PM
8:00 PM3:00 PM
9:00 PM4:00 PM
10:00 PM5:00 PM
11:00 PM6:00 PM

Best time to call or meet

Both sides are at work from 2:00 PM – 6:00 PM in London (9:00 AM – 1:00 PM in Williamstown).

Daylight saving time and the difference

The difference changes during the year because London and Williamstown switch clocks on different dates:

  • Oct 19, 2026 – Oct 25, 2026: -5h
  • Oct 25, 2026 – Nov 1, 2026: -4h
  • Nov 1, 2026 – Mar 14, 2027: -5h
  • Mar 14, 2027 – Mar 28, 2027: -4h
  • Mar 28, 2027 – Oct 19, 2027: -5h

Distance

London and Williamstown are 5,708 km (3,547 miles) apart in a straight line.

More conversions

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Questions and answers

What is the time difference between London and Williamstown?

Williamstown is 5 hours behind London.

What time is it in Williamstown when it is 9 AM in London?

When it is 9:00 AM in London, it is 4:00 AM in Williamstown.

When is the best time to call Williamstown from London?

Both sides are at work from 2:00 PM – 6:00 PM in London (9:00 AM – 1:00 PM in Williamstown).

Does the time difference between London and Williamstown change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.