How to read it
Singapore and Chicago, side by side
Each row is one city's day, half an hour to a square, lined up by the hours along the bottom.
- 1Filled: at the desk, 9:00 to 18:00 where that city is.
- 2Grey: up early, up late, or the weekend.
- 3Outline: asleep.
- 4Red band: your slot. Read straight down to see the same moment in every city.
- 5A marks the best time for everyone; B, when there is one, the next best.
The red band is the best time to call on Wed, 21 Oct 2026: 09:00–10:00 in Singapore, which is 20:00–21:00 in Chicago.
Through the year
How the gap between Singapore and Chicago moves
Chicago is 13h behind Singapore today. Daylight saving moves it:
- Chicago 13h behind Singapore
- Chicago 14h behind Singapore
- Sun, 1 Nov 2026 Chicago's clocks go back an hour. Chicago is then 14h behind Singapore.
- Sun, 14 Mar 2027 Chicago's clocks go forward an hour. Chicago is then 13h behind Singapore.
Hour by hour
Singapore to Chicago time, hour by hour
On a working day (Wed, 21 Oct 2026), with working hours of 9:00 to 18:00 in both cities.
- Singapore starts work 09:00 20:00 Tue in Chicago Late
- Chicago starts work 09:00 22:00 in Singapore Asleep
- Singapore finishes work 18:00 05:00 in Chicago Asleep
- Chicago finishes work 18:00 07:00 Wed in Singapore Early
Show all 24 hours
| Singapore | Chicago |
|---|---|
| 00:00 Asleep | 11:00 Tue At desk |
| 01:00 Asleep | 12:00 Tue At desk |
| 02:00 Asleep | 13:00 Tue At desk |
| 03:00 Asleep | 14:00 Tue At desk |
| 04:00 Asleep | 15:00 Tue At desk |
| 05:00 Asleep | 16:00 Tue At desk |
| 06:00 Asleep | 17:00 Tue At desk |
| 07:00 Early | 18:00 Tue Late |
| 08:00 Early | 19:00 Tue Late |
| 09:00 At desk | 20:00 Tue Late |
| 10:00 At desk | 21:00 Tue Late |
| 11:00 At desk | 22:00 Tue Asleep |
| 12:00 At desk | 23:00 Tue Asleep |
| 13:00 At desk | 00:00 Asleep |
| 14:00 At desk | 01:00 Asleep |
| 15:00 At desk | 02:00 Asleep |
| 16:00 At desk | 03:00 Asleep |
| 17:00 At desk | 04:00 Asleep |
| 18:00 Late | 05:00 Asleep |
| 19:00 Late | 06:00 Asleep |
| 20:00 Late | 07:00 Early |
| 21:00 Late | 08:00 Early |
| 22:00 Asleep | 09:00 At desk |
| 23:00 Asleep | 10:00 At desk |
Questions
Questions people ask
What is the time difference between Singapore and Chicago?
Chicago is 13h behind Singapore (as of Wed, 21 Oct 2026). That changes on Sun, 1 Nov 2026, when Chicago's clocks go back: then Chicago is 14h behind Singapore.
What is the best time for a call between Singapore and Chicago?
On a working day, the best time for a call is 09:00–10:00 in Singapore (20:00–21:00 in Chicago) until 31 Oct 2026 and from 14 Mar 2027, and 09:00–10:00 in Singapore (19:00–20:00 in Chicago) from 1 Nov 2026 to 13 Mar 2027.
Does Singapore change its clocks?
No. Singapore stays on UTC+8 all year.
Does Chicago change its clocks?
Yes. Chicago moves its clocks back an hour on Sun, 1 Nov 2026, and forward an hour on Sun, 14 Mar 2027.
More city pairs
Compare more cities
Singapore and…
- Singapore and Mumbai
- Singapore and Delhi
- Singapore and Bengaluru
- Singapore and Dubai
- Singapore and Abu Dhabi
- Singapore and Riyadh
- Singapore and Doha
- Singapore and Hong Kong
- Singapore and Tokyo
- Singapore and Sydney
- Singapore and London
- Singapore and Paris
- Singapore and Berlin
- Singapore and Amsterdam
- Singapore and New York
- Singapore and Toronto
- Singapore and Los Angeles
- Singapore and San Francisco
Chicago and…
- Chicago and Mumbai
- Chicago and Delhi
- Chicago and Bengaluru
- Chicago and Dubai
- Chicago and Abu Dhabi
- Chicago and Riyadh
- Chicago and Doha
- Chicago and Hong Kong
- Chicago and Tokyo
- Chicago and Sydney
- Chicago and London
- Chicago and Paris
- Chicago and Berlin
- Chicago and Amsterdam
- Chicago and New York
- Chicago and Toronto
- Chicago and Los Angeles
- Chicago and San Francisco
From the team behind 10:10
Running an event across time zones?
C4E has spent twenty years running conferences, dealer meets and offsites in more than 40 countries, with clients, speakers and crews in different time zones. 10:10 is one of the tools we built for our own shows. It is free, with no account and nothing upsold.