London to Northbrook time converter

Northbrook is 6 hours behind London. When it is 9:00 AM in London, it is 3:00 AM in Northbrook.

London BST

Monday, October 19, 2026

Northbrook CDT

Sunday, October 18, 2026

London
United Kingdom
Mon, Oct 19
BSTUTC+1
Northbrook
Illinois, United States
Sun, Oct 18
CDTUTC-5-6h
Finding your time zone…
Shared working hours (9:00–18:00)

London to Northbrook conversion table

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

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

Best time to call or meet

Both sides are at work from 3:00 PM – 6:00 PM in London (9:00 AM – 12:00 PM in Northbrook).

Daylight saving time and the difference

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

  • Oct 19, 2026 – Oct 25, 2026: -6h
  • Oct 25, 2026 – Nov 1, 2026: -5h
  • Nov 1, 2026 – Mar 14, 2027: -6h
  • Mar 14, 2027 – Mar 28, 2027: -5h
  • Mar 28, 2027 – Oct 19, 2027: -6h

Distance

London and Northbrook are 6,347 km (3,944 miles) apart in a straight line.

More conversions

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Questions and answers

What is the time difference between London and Northbrook?

Northbrook is 6 hours behind London.

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

When it is 9:00 AM in London, it is 3:00 AM in Northbrook.

When is the best time to call Northbrook from London?

Both sides are at work from 3:00 PM – 6:00 PM in London (9:00 AM – 12:00 PM in Northbrook).

Does the time difference between London and Northbrook change?

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