The best time to meet between Chicago and London

London is 6 hours ahead of Chicago today. Their working days overlap for two hours: 9 am to 11 am in Chicago is 15:00 to 17:00 in London.

Time difference today+6 hLondon ahead of Chicago; 5 h to 6 h over the year
Shared working hours2 h9 am–11 am in Chicago, 15:00–17:00 in London
Fairest hour to meet9:30 amin Chicago, which is 15:30 in London

Chicago and London, hour by hour

Every hour of the day in Chicago, beside the same moment in London. Rows marked in lime are inside working hours in both.
Each hour in Chicago and the same moment in London, for each time difference over the year.
ChicagoLondon +6 h, todayLondon +5 h
12 am06:0005:00
1 am07:0006:00
2 am08:0007:00
3 am09:0008:00
4 am10:0009:00
5 am11:0010:00
6 am12:0011:00
7 am13:0012:00
8 am14:0013:00
9 am15:0014:00
10 am16:0015:00
11 am17:0016:00
12 pm18:0017:00
1 pm19:0018:00
2 pm20:0019:00
3 pm21:0020:00
4 pm22:0021:00
5 pm23:0022:00
6 pm00:00+1 day23:00
7 pm01:00+1 day00:00+1 day
8 pm02:00+1 day01:00+1 day
9 pm03:00+1 day02:00+1 day
10 pm04:00+1 day03:00+1 day
11 pm05:00+1 day04:00+1 day
09:00 to 17:00 Early or late Both at work
  • +6 h: until October 24, November 1 to March 13, 2027, from March 28, 2027
  • +5 h: October 25 to October 31, March 14, 2027 to March 27, 2027

When the gap changes

Today London is 6 hours ahead of Chicago.

  • October 25London moves its clocks back and the gap becomes 5 hours.
  • November 1Chicago moves its clocks back and the gap becomes 6 hours.
  • March 14, 2027Chicago moves its clocks forward and the gap becomes 5 hours.
  • March 28, 2027London moves its clocks forward and the gap becomes 6 hours.

Both use summer time but change on different weekends, which is why the gap moves for a few weeks in spring and autumn. A recurring meeting set in one city's calendar arrives an hour early or late in the other for those weeks.

Making it work

The shared window is the morning in Chicago and two hours long, so it is worth protecting. Put recurring calls inside it and move anything that only one side needs outside it.

Offer two or three times within the window rather than one. Someone always has a clash, and a poll with three options settles in a day where a single proposal starts a thread.

Try another date, or add a city

The planner starts with Chicago and London. Pick the actual meeting date, add anyone else who joins, and click up to three hours to send as options.

Chicago and London questions

What is the time difference between Chicago and London?

Today London is 6 hours ahead of Chicago. On October 25, London moves its clocks back and the gap becomes 5 hours. On November 1, Chicago moves its clocks back and the gap becomes 6 hours. On March 14, 2027, Chicago moves its clocks forward and the gap becomes 5 hours. On March 28, 2027, London moves its clocks forward and the gap becomes 6 hours. Both use summer time but change on different weekends, which is why the gap moves for a few weeks in spring and autumn. A recurring meeting set in one city's calendar arrives an hour early or late in the other for those weeks.

What is the best time for a meeting between Chicago and London?

Their working days overlap for two hours: 9 am to 11 am in Chicago is 15:00 to 17:00 in London. The most comfortable hour for both is 9:30 am in Chicago, 15:30 in London.

What time is 9 am in Chicago in London?

9 am in Chicago is 15:00 in London today. When the gap is 5 hours, 14:00.

Do Chicago and London use daylight saving time?

Chicago moves its clocks back on November 1 and forward on March 14, 2027. London moves its clocks back on October 25 and forward on March 28, 2027.

Does this apply to other cities?

Dallas, Houston and Minneapolis keep the same time as Chicago (Central Time, CST/CDT), so everything on this page applies to them too. Dublin, Edinburgh and Lisbon keep the same time as London (UK time, GMT/BST), so everything on this page applies to them too.

Other city pairs

Let both cities vote on the hour.

Create a free poll

Propose two or three of the hours above, share one link, and everyone votes in their own time zone. Free, and no account for the people you invite.