There is no overlap between 09:00–18:00 working days in these two places.
Clock changes in Yokohama and Chicago
Yokohama
Japan Standard Time (JST)
No daylight saving time.
Chicago
Central Daylight Time (CDT)
Next clock change Sun 1 Nov 2026 (UTC−5 → UTC−6)
Time difference between Yokohama and Chicago today
Right now Chicago is 14 hours behind of Yokohama. When it is 09:00 in Yokohama, it is 19:00 in Chicago the previous day. Yokohama is on Japan Standard Time (JST); Chicago is on Central Daylight Time (CDT).
When the Yokohama to Chicago time difference changes
For most of the year Chicago is 14 hours behind of Yokohama. From 1 November to 31 December 2026, Chicago is 15 hours behind of Yokohama instead, because the two places change their clocks on different dates. Meetings booked by the usual gap land an hour off in those weeks.
Dates
Chicago vs Yokohama
Length
8 March 2026 to 31 October 2026
14 hours behind
238 days
1 November 2026 to 31 December 2026
15 hours behind
61 days
1 January 2027 to 13 March 2027
15 hours behind
72 days
14 March 2027 to 6 November 2027
14 hours behind
238 days
7 November 2027 to 31 December 2027
15 hours behind
55 days
Calling hours for Yokohama and Chicago
When Chicago is 14 hours behind of Yokohama: no shared 09:00 to 17:00 hours; one side has to take the call outside office hours.
When Chicago is 15 hours behind of Yokohama: no shared 09:00 to 17:00 hours; one side has to take the call outside office hours.
Frequently asked questions about Yokohama and Chicago time
What time is it in Chicago when it is 9:00 AM in Yokohama?
19:00 today; Chicago is 14 hours behind of Yokohama.
Does the time difference between Yokohama and Chicago change?
Yes. It is usually 14 hours behind, but changes when one side moves its clocks: 15 hours behind from 1 November to 31 December 2026; 15 hours behind from 1 January to 13 March 2027.