JST to CST Time Converter

Convert Japan Standard Time (JST) to Central Standard Time (CST). Both time zones are shown live below; current offset between them is 14 hours behind.

Tokyo · Japan Standard Time
05:55:28
Monday, May 11, 2026
GMT+9 · UTC+09:00
Chicago · Central Standard Time
15:55:28
Sunday, May 10, 2026
CDT · UTC-05:00

Convert a specific time

From: JST (Tokyo)
To: CST (Chicago)
--:--

Daylight Saving status right now

JST (Japan Standard Time)
Observes DST
No
CST (Central Standard Time)
Observes DST
Yes
In DST right now
Yes
Next fall back
2026-11-01
Offset shift
UTC-05:00 → UTC-06:00

Heads up: CST observes DST while JST does not. The 14-hour difference shown above will shift by one hour when CST starts or ends DST.

When can JST and CST meet?

00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
JST
CST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Tokyo (JST). Each row shows the local working-hours state in that zone for the same moment in time.
No overlap during strict 9-5 working hours; some flexibility needed.
If both sides are willing to extend to 8am-7pm, the available window is 08:00–08:00 JST (18:00–18:00 CST).

Hour-by-hour JST to CST conversion table

JST time (Tokyo)CST time (Chicago)Status
00:00 Mon10:00 SunCST working
01:00 Mon11:00 SunCST working
02:00 Mon12:00 SunCST working
03:00 Mon13:00 SunCST working
04:00 Mon14:00 SunCST working
05:00 Mon15:00 SunCST working
06:00 Mon16:00 SunCST working
07:00 Mon17:00 SunOff-hours both sides
08:00 Mon18:00 SunOff-hours both sides
09:00 Mon19:00 SunJST working
10:00 Mon20:00 SunJST working
11:00 Mon21:00 SunJST working
12:00 Mon22:00 SunJST working
13:00 Mon23:00 SunJST working
14:00 Mon00:00 MonJST working
15:00 Mon01:00 MonJST working
16:00 Mon02:00 MonJST working
17:00 Mon03:00 MonOff-hours both sides
18:00 Mon04:00 MonOff-hours both sides
19:00 Mon05:00 MonOff-hours both sides
20:00 Mon06:00 MonOff-hours both sides
21:00 Mon07:00 MonOff-hours both sides
22:00 Mon08:00 MonOff-hours both sides
23:00 Mon09:00 MonCST working

Times computed for today in each zone using the IANA time zone database. The conversion accounts for daylight saving time wherever applicable.

About these time zones

Japan Standard Time (JST)
IANA identifier
Asia/Tokyo
Current UTC offset
UTC+09:00
Current abbreviation
GMT+9
Major cities in this zone
TokyoOsakaKyotoYokohama
Central Standard Time (CST)
IANA identifier
America/Chicago
Current UTC offset
UTC-05:00
Current abbreviation
CDT
Major cities in this zone
ChicagoHoustonDallasAustinNew Orleans

Sun today in Tokyo and Chicago

Tokyo
Sunrise
04:41
Sunset
18:36
Solar noon
11:39
Daylight
13h 55m
Chicago
Sunrise
05:37
Sunset
19:59
Solar noon
12:48
Daylight
14h 22m

Related converters

CST to JST (reverse)JST to ESTJST to PSTJST to GMTJST to UTCJST to CETEST to CSTPST to CSTGMT to CSTUTC to CSTCET to CST
Looking for local time? See time in Tokyo or time in Chicago.

Frequently asked questions

What is the time difference between JST and CST right now?+
CST (Central Standard Time) is currently 14 hours behind JST (Japan Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does JST or CST observe daylight saving time?+
JST: does not observe daylight saving time. CST: observes daylight saving time.
When is the best time to schedule a meeting between JST and CST?+
Standard 9-5 hours do not overlap. Extending to 8am-7pm gives a window of 08:00–08:00 JST (18:00–18:00 CST).
What time is it in Chicago when it is 12:00 noon in Tokyo?+
When it is 12:00 Mon in Tokyo (JST), it is 22:00 Sun in Chicago (CST).
Which IANA time zone identifiers are used for JST and CST?+
JST maps to "Asia/Tokyo" in the IANA database. CST maps to "America/Chicago". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Tokyo ahead of or behind Chicago?+
Whether Tokyo (JST) is ahead of or behind Chicago (CST) depends on the current UTC offsets. Right now CST is 14 hours behind JST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for JST and CST?+
JST is UTC+09:00 (GMT+9) and CST is UTC-05:00 (CDT). Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.
Can I schedule meetings during business hours for both JST and CST?+
Not during a strict 9am-5pm window. If both sides flex to 8am-7pm, the available meeting window between JST and CST is 08:00–08:00 JST.