JST to CST converter: Japan time to Central time

In 2026 Chicago is 15 hours behind Tokyo until 8 March, 14 hours behind from 8 March to 1 November and 15 hours behind for the rest of the year, as only Chicago changes its clocks.

Tokyo12:00 PMSunday 11 Oct · JST

Chicago10:00 PMSaturday 10 Oct · CDT

Chicago is 14 h behind Tokyo today.

Tokyo

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Chicago

10111213141516171819202122230123456789

9 to 6 working hoursboth at workNo overlap. Nearest: 7 AM in Tokyo is 17:00 in Chicago

Your result

Enter your values to see the result.

Daylight saving: local time and fixed JST and CST

The converter starts with Tokyo to Chicago, using local clock rules. For the standard-time offsets all year, use the fixed JST and CST button.

These examples use noon on the dates shown. A converted date can be the previous or following day.

Starting date and time	Using local city rules	Using fixed JST and CST
2026-01-15 12:00	2026-01-14 21:00 (UTC-06:00)	2026-01-14 21:00
2026-07-15 12:00	2026-07-14 22:00 (UTC-05:00)	2026-07-14 21:00

12:00 PM Wednesday 15 Jul in Tokyo is 10:00 PM Tuesday 14 Jul in Chicago (CDT, 14 h behind).

Why daylight saving conversions need a date explains skipped and repeated clock readings. The rules here come from the browser’s time zone data and can lag a government change.