Japan Standard Time (jst) is used in Japan. The IANA timezone identifier is Asia/Tokyo.

Central Daylight Time (cdt) is used in USA. The IANA timezone identifier is America/Chicago.

JST to CDT Time Converter

Japan Standard Time → Central Daylight Time

JST = UTC+9CDT = UTC-5

ClockinSync

BASE

09:00

Work Clients Team +

00:0006:0012:0018:0024:00

CDT (Chicago)

USA · -14h🔔 Public Holiday in 7d — Juneteenth National Independence Day

19:00-1 day

London

United Kingdom · -8h

01:00

New York

USA · -13h

20:00-1 day

Dubai

United Arab Emirates · -5h

04:00

Sydney

Australia · +1h

10:00

JST (Tokyo) vs CDT (Chicago) — time difference

JST (Tokyo) is 14 hours ahead of CDT (Chicago). Midday in JST (Tokyo) lines up with 22:00 in CDT (Chicago).

JST (Tokyo) is in the Asia/Tokyo timezone. CDT (Chicago) is in America/Chicago. The difference is 14 hours.

Shared working hours

JST (Tokyo) and CDT (Chicago) have no shared working hours under a standard 9:00–17:00 schedule. One side will always need to join at an off-hour.

When to schedule across time zones

Since JST (Tokyo) and CDT (Chicago) don't share working hours, these are the most practical options available.

06:00 Tokyo / 16:00 Chicago⚡ One side off-hours

⚠️ 3h before working hours in Tokyo

09:00 Tokyo / 19:00 Chicago⚡ One side off-hours

⚠️ 3h after working hours in Chicago

05:00 Tokyo / 15:00 Chicago⚡ One side off-hours

⚠️ 4h before working hours in Tokyo

Based on standard 09:00–17:00 working hours in each location's local time.

Upcoming public holidays

⚡ Watch out — upcoming holidays on both sides. Verify availability in advance.

JST (Tokyo)7 holidays

Jul 20Marine Day

Aug 11Mountain Day

Sep 21Respect for the Aged Day

Sep 23Autumnal Equinox Day

Oct 12Sports Day

CDT (Chicago)8 holidays

Jun 19Juneteenth National Independence DaySOON

Jul 3Independence Day

Sep 7Labour Day

Oct 12Columbus Day

Oct 12Indigenous Peoples' Day

How to work with JST (Tokyo) and CDT (Chicago) time zones

A 14-hour difference separates JST (Tokyo) (Japan) and CDT (Chicago) (USA) — wide enough that standard business hours don't align at all. Scheduling requires deliberate compromise from both sides.

💡 How to schedule across these time zones

⚡

When JST (Tokyo) is at 06:00, CDT (Chicago) reads 16:00 — 3h before working hours in Tokyo.

⚡

When JST (Tokyo) is at 09:00, CDT (Chicago) reads 19:00 — 3h after working hours in Chicago.

⚡

When JST (Tokyo) is at 05:00, CDT (Chicago) reads 15:00 — 4h before working hours in Tokyo.

Since there is no natural overlap, the options above represent the most balanced compromise, minimizing out-of-hours inconvenience for both sides.

DST transitions can silently shift your meeting times by an hour. The ClockinSync Chrome Extension tracks these changes automatically so you never get caught off guard.

Get the Extension — Free →

Use the time slider above to find the exact equivalent time for any moment in JST (Tokyo). The input bar accepts natural language like "3pm", "15:30", or "9am Rome" for instant conversions.

JST (Tokyo) ↔ CDT (Chicago)

No overlap — one side will join outside working hours

JST (Tokyo)

CDT (Chicago)