CST to CHST Time Converter

Convert Central Standard Time (CST) to Chamorro Standard Time (CHST). Both time zones are shown live below; current offset between them is 15 hours ahead.

Chicago · Central Standard Time
15:40:40
Friday, May 15, 2026
CDT · UTC-05:00
Hagåtña · Chamorro Standard Time
06:40:40
Saturday, May 16, 2026
GMT+10 · UTC+10:00

Convert a specific time

From: CST (Chicago)
To: CHST (Hagåtña)
--:--

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
CHST (Chamorro Standard Time)
Observes DST
No

Heads up: CST observes DST while CHST does not. The 15-hour difference shown above will shift by one hour when CST starts or ends DST.

When can CST and CHST 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
CHST
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 17:00–18:00 CST (08:00–09:00 CHST).

Hour-by-hour CST to CHST conversion table

CST time (Chicago)CHST time (Hagåtña)Status
00:00 Fri15:00 FriCHST working
01:00 Fri16:00 FriCHST working
02:00 Fri17:00 FriOff-hours both sides
03:00 Fri18:00 FriOff-hours both sides
04:00 Fri19:00 FriOff-hours both sides
05:00 Fri20:00 FriOff-hours both sides
06:00 Fri21:00 FriOff-hours both sides
07:00 Fri22:00 FriOff-hours both sides
08:00 Fri23:00 FriOff-hours both sides
09:00 Fri00:00 SatCST working
10:00 Fri01:00 SatCST working
11:00 Fri02:00 SatCST working
12:00 Fri03:00 SatCST working
13:00 Fri04:00 SatCST working
14:00 Fri05:00 SatCST working
15:00 Fri06:00 SatCST working
16:00 Fri07:00 SatCST working
17:00 Fri08:00 SatOff-hours both sides
18:00 Fri09:00 SatCHST working
19:00 Fri10:00 SatCHST working
20:00 Fri11:00 SatCHST working
21:00 Fri12:00 SatCHST working
22:00 Fri13:00 SatCHST working
23:00 Fri14:00 SatCHST 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
Chamorro Standard Time (CHST)
IANA identifier
Pacific/Guam
Current UTC offset
UTC+10:00
Current abbreviation
GMT+10
Major cities in this zone
Hagåtña

Sun today in Chicago and Hagåtña

Chicago
Sunrise
05:31
Sunset
20:04
Solar noon
12:48
Daylight
14h 32m

Related converters

CHST to CST (reverse)CST to ESTCST to PSTCST to GMTCST to UTCCST to CETEST to CHSTPST to CHSTGMT to CHSTUTC to CHSTCET to CHST
Looking for local time? See time in Chicago or time in Hagåtña.

Frequently asked questions

What is the time difference between CST and CHST right now?+
CHST (Chamorro Standard Time) is currently 15 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 CHST observe daylight saving time?+
CST: observes daylight saving time. CHST: does not observe daylight saving time.
When is the best time to schedule a meeting between CST and CHST?+
Standard 9-5 hours do not overlap. Extending to 8am-7pm gives a window of 17:00–18:00 CST (08:00–09:00 CHST).
What time is it in Hagåtña when it is 12:00 noon in Chicago?+
When it is 12:00 Fri in Chicago (CST), it is 03:00 Sat in Hagåtña (CHST).
Which IANA time zone identifiers are used for CST and CHST?+
CST maps to "America/Chicago" in the IANA database. CHST maps to "Pacific/Guam". These identifiers are what most software libraries use to convert times accurately, including DST handling.
Is Chicago ahead of or behind Hagåtña?+
Whether Chicago (CST) is ahead of or behind Hagåtña (CHST) depends on the current UTC offsets. Right now CHST is 15 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 CHST?+
CST is UTC-05:00 (CDT) and CHST is UTC+10:00 (GMT+10). 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 CHST?+
Not during a strict 9am-5pm window. If both sides flex to 8am-7pm, the available meeting window between CST and CHST is 17:00–18:00 CST.