Highlighted rows fall within 09:00–18:00 in both places: 8 shared working hours.
Clock changes in Boston and Chicago
Boston
Eastern Daylight Time (EDT)
Next clock change Sun 1 Nov 2026 (UTC−4 → UTC−5)
Chicago
Central Daylight Time (CDT)
Next clock change Sun 1 Nov 2026 (UTC−5 → UTC−6)
Time difference between Boston and Chicago today
Today Chicago is 1 hour behind of Boston. When it is 09:00 in Boston, it is 08:00 in Chicago. Boston is on Eastern Daylight Time (EDT); Chicago is on Central Daylight Time (CDT).
Does the Boston to Chicago time difference change?
No. Chicago is 1 hour behind of boston all year, because both places change their clocks on the same dates.
When Boston and Chicago are both at work
When Chicago is 1 hour behind of Boston: 7 shared office hours, 10:00 to 17:00 in Boston (09:00 to 16:00 in Chicago).
Frequently asked questions about Boston and Chicago time
What time is it in Chicago when it is 9:00 AM in Boston?
08:00 today; Chicago is 1 hour behind of Boston.
Does the time difference between Boston and Chicago change during the year?
No, it stays 1 hour behind all year because both places change their clocks on the same dates.