Chicago time zone and office-hour overlap
When Chicago, New York and London are all at work.
Chicago
New York
London
- Everyone at work
- Work hours
- Awake
- Night
- Weekend
Tap any column to see that moment in every city.
Different hours for each city
- UTC−6Central Standard Time, January
- UTC−5Central Daylight Time, July
- America/ChicagoIANA time zone name
- 7other listed cities on the same clock all year
Clock changes
Chicago moves its clocks forward one hour on the second Sunday in March at 2:00 am local time and back on the first Sunday in November at 2:00 am, switching between Central Standard Time (UTC−6) and Central Daylight Time (UTC−5).
Next change, as of when this page was built (2026-10-20): back on Sun 1 November 2026, from UTC−5 to UTC−6.
Sun and clock
At 87.7° west, the sun is highest over Chicago at about 11:51 am on the winter clock — 9 minutes before noon, because the clock runs behind the sun.
In mid-January the sun rises at about 7:16 am and sets at about 4:43 pm — 9 hours 30 minutes of daylight.
In mid-July the sun rises at about 5:28 am and sets at about 8:25 pm — 15 hours of daylight.
On a January weekday, 16 of the listed cities share the whole 9-to-5 day with Chicago, 98 share at least two hours and 114 share no office time at all; on a July weekday the counts are 13, 109 and 104. The furthest away on the clock in January is Auckland (New Zealand), 19 hours ahead.
Of the 268 cities in this planner, 15 are behind Chicago in January, 16 show the same time and 236 are ahead of it.
Cities on the same clock
All year, Chicago shows the same time as Houston, San Antonio, Dallas, Austin, Winnipeg (Canada), Nashville and Minneapolis.
Only in January (northern winter) it matches Mexico City (Mexico), Guadalajara (Mexico), Monterrey (Mexico), Guatemala City (Guatemala), Managua (Nicaragua), Tegucigalpa (Honduras), San Salvador (El Salvador), San José (Costa Rica) and 1 more — they change their clocks on different dates or not at all.
Only in July it matches Lima (Peru), Bogotá (Colombia), Quito (Ecuador), Kingston (Jamaica), Cancún (Mexico) and Panama City (Panama).
Office hours shared with 11 business cities
Counting a 9-to-5 day, Monday to Friday, in both cities: Chicago shares two hours or more with New York, Los Angeles, London, Auckland and São Paulo, and no office time at all with Dubai, Mumbai, Singapore and Tokyo.
| City | Gap, Jan / Jul | Shared, Jan / Jul | At 9 am |
|---|---|---|---|
| New York | +1 / +1 h | 7 / 7 h | 10:00 am |
| Los Angeles | −2 / −2 h | 6 / 6 h | 7:00 am |
| London | +6 / +6 h | 2 / 2 h | 3:00 pm |
| Paris | +7 / +7 h | 1 / 1 h | 4:00 pm |
| Dubai | +10 / +9 h | 0 / 0 h | 7:00 pm |
| Mumbai | +11½ / +10½ h | 0 / 0 h | 8:30 pm |
| Singapore | +14 / +13 h | 0 / 0 h | 11:00 pm |
| Tokyo | +15 / +14 h | 0 / 0 h | 12:00 am (+1 day) |
| Sydney | +17 / +15 h | 1 / 0 h | 2:00 am (+1 day) |
| Auckland | +19 / +17 h | 3 / 1 h | 4:00 am (+1 day) |
| São Paulo | +3 / +2 h | 5 / 6 h | 12:00 pm |
Time differences with Chicago
- New York and ChicagoChicago behind by 1 hour · 7 hours of shared office time
- London and ChicagoChicago behind by 6 hours · 2 hours of shared office time
- Los Angeles and ChicagoChicago ahead by 2 hours · 6 hours of shared office time
- Chicago and PhoenixPhoenix behind by 1–2 hours · 7 hours of shared office time
- Chicago and SydneySydney ahead by 15–17 hours · 1 hour of shared office time
- Chicago and TokyoTokyo ahead by 14–15 hours · no shared office hours
- Chicago and ParisParis ahead by 7 hours · 1 hour of shared office time
City names, coordinates and time zone assignments: GeoNames, licensed under CC BY 4.0 (selection and renaming of some cities by this site). Clock times are computed in your browser from the IANA time zone database. Sources and limits.