CST to JST Time Converter

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

Chicago · Central Standard Time
15:55:26
Sunday, May 10, 2026
CDT · UTC-05:00
Tokyo · Japan Standard Time
05:55:26
Monday, May 11, 2026
GMT+9 · UTC+09:00

Convert a specific time

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

Daylight Saving status right now

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
JST (Japan Standard Time)
Observes DST
No

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 CST and JST 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
CST
JST
Both zones in working hours (9am-5pm)
One zone working
Off-hours
Columns are hours of the day in Chicago (CST). 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 18:00–18:00 CST (08:00–08:00 JST).

Hour-by-hour CST to JST conversion table

CST time (Chicago)JST time (Tokyo)Status
00:00 Sun14:00 SunJST working
01:00 Sun15:00 SunJST working
02:00 Sun16:00 SunJST working
03:00 Sun17:00 SunOff-hours both sides
04:00 Sun18:00 SunOff-hours both sides
05:00 Sun19:00 SunOff-hours both sides
06:00 Sun20:00 SunOff-hours both sides
07:00 Sun21:00 SunOff-hours both sides
08:00 Sun22:00 SunOff-hours both sides
09:00 Sun23:00 SunCST working
10:00 Sun00:00 MonCST working
11:00 Sun01:00 MonCST working
12:00 Sun02:00 MonCST working
13:00 Sun03:00 MonCST working
14:00 Sun04:00 MonCST working
15:00 Sun05:00 MonCST working
16:00 Sun06:00 MonCST working
17:00 Sun07:00 MonOff-hours both sides
18:00 Sun08:00 MonOff-hours both sides
19:00 Sun09:00 MonJST working
20:00 Sun10:00 MonJST working
21:00 Sun11:00 MonJST working
22:00 Sun12:00 MonJST working
23:00 Sun13:00 MonJST 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

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

Sun today in Chicago and Tokyo

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

Related converters

JST to CST (reverse)CST to ESTCST to PSTCST to GMTCST to UTCCST to CETEST to JSTPST to JSTGMT to JSTUTC to JSTCET to JST
Looking for local time? See time in Chicago or time in Tokyo.

Frequently asked questions

What is the time difference between CST and JST right now?+
JST (Japan Standard Time) is currently 14 hours ahead CST (Central Standard Time). The exact difference can change when one or both zones transition into or out of daylight saving time.
Does CST or JST observe daylight saving time?+
CST: observes daylight saving time. JST: does not observe daylight saving time.
When is the best time to schedule a meeting between CST and JST?+
Standard 9-5 hours do not overlap. Extending to 8am-7pm gives a window of 18:00–18:00 CST (08:00–08:00 JST).
What time is it in Tokyo when it is 12:00 noon in Chicago?+
When it is 12:00 Sun in Chicago (CST), it is 02:00 Mon in Tokyo (JST).
Which IANA time zone identifiers are used for CST and JST?+
CST maps to "America/Chicago" in the IANA database. JST maps to "Asia/Tokyo". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Chicago ahead of or behind Tokyo?+
Whether Chicago (CST) is ahead of or behind Tokyo (JST) depends on the current UTC offsets. Right now JST is 14 hours ahead CST. The live converter and side-by-side clocks above always reflect the current direction.
What are the current UTC offsets for CST and JST?+
CST is UTC-05:00 (CDT) and JST is UTC+09:00 (GMT+9). 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 CST and JST?+
Not during a strict 9am-5pm window. If both sides flex to 8am-7pm, the available meeting window between CST and JST is 18:00–18:00 CST.