JST to Chicago Time Converter
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Quick answers
Selected conversion
9:00 pm21:00 JST (UTC+9), Oct 18, 2026 = 7:00 am07:00 CDT (UTC-5), Oct 18, 2026
JST is 14 hours ahead of Chicago.
How the time difference changes
For most of the year, JST is 14 hours ahead of Chicago. From Nov 1, 2026 to Mar 14, 2027, JST is 15 hours ahead of Chicago.
For most of the year, working hours of 9:00 am to 6:00 pm in JST correspond to 7:00 pm (previous day) to 4:00 am in Chicago. At other times of the year, working hours of 9:00 am to 6:00 pm in JST correspond to 6:00 pm (previous day) to 3:00 am in Chicago.For most of the year, working hours of 09:00 to 18:00 in JST correspond to 19:00 (previous day) to 04:00 in Chicago. At other times of the year, working hours of 09:00 to 18:00 in JST correspond to 18:00 (previous day) to 03:00 in Chicago.
Compare JST time with Chicago time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Japan Standard Time is 14 hours ahead of CDT (Central Daylight Time).
9:00 pm21:00 in JST is 7:00 am07:00 in Chicago, IL, USA
JST to Chicago call time
Best time for a conference call or a meeting is between 8am-9am08:00-09:00 in JST which corresponds to 6pm-7pm18:00-19:00 in Chicago (previous day). Their 9am–6pm09:00–18:00 working hours do not overlap; this is a suggested compromise.
9:00 pm21:00 Japan Standard Time (JST). Offset UTC +9:00 hours
7:00 am07:00 CDT (Central Daylight Time) (Chicago, IL, USA). Offset UTC -5:00 hours
9:00 pm21:00 JST / 7:00 am07:00 Chicago, IL, USA
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Japan Standard Time
Offset: JST is 9 hours ahead of Greenwich Mean Time (GMT).
Countries using this time zone: Japan
Principal Cities: The largest city in the JST time zone is Tokyo in Japan, with about 9.733 million people. Other major cities in this time zone include Yokohama, Osaka, Nagoya, Sapporo.
Daylight Saving: Clocks in Japan Standard Time (JST) do not change for daylight saving time, so JST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
Current time in Japan: Japan time now
JST representations, usage and related time zones
- +09 - basic short
- +0900 - basic
- +09:00 - extended
- +0900 - sign character (+) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the east of the zero meridian.
- India - Military abbreviation for JST
- I - short form of 'India'
- Asia/Tokyo
- Japan
- AWDT - Australian Western Daylight Time
- CHOST - Choibalsan Summer Time
- I - India Time Zone
- IRKST - Irkutsk Summer Time
- JST - Japan Standard Time
- KST - Korea Standard Time
- PWT - Palau Time
- TLT - East Timor Time
- ULAST - Ulaanbaatar Summer Time
- WIT - Eastern Indonesian Time
- YAKT - Yakutsk Time
Chicago Time Zone and Facts
Time Zone
CST – Central Standard Time, UTC-6 (standard time)