Clockjumper

Timezone conversion

CST to HST Time — Convert Central Standard Time (US) to Hawaii Standard Time

HST is currently 5 hours behind CST. The gap shifts across the year: around January HST is 4 hours behind CST, and around July it is 5 hours behind CST, because one or both zones observe daylight saving.

HST is currently 5 hours behind CST.

CST • CDT (UTC-5)
9:32 AM
Thursday, Sep 10
HST • HST (UTC-10)
4:32 AM
Thursday, Sep 10

Abbreviation disambiguation

On Clockjumper, CST refers to US Central Standard Time (UTC−6). The same three letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5) — check the city or UTC offset to be sure which is meant.

Hawaii Standard Time is UTC−10 year-round. Hawaii does not observe daylight saving time.

Interactive converter

From

12:00PM

To

Select both cities to see the converted time.

Pick a time to convert
:

Full CST to HST conversion table

CSTHST
12:00 AM7:00 PM(previous day)
1:00 AM8:00 PM(previous day)
2:00 AM9:00 PM(previous day)
3:00 AM10:00 PM(previous day)
4:00 AM11:00 PM(previous day)
5:00 AM12:00 AM
6:00 AM1:00 AM
7:00 AM2:00 AM
8:00 AM3:00 AM
9:00 AM4:00 AM
10:00 AM5:00 AM
11:00 AM6:00 AM
12:00 PM7:00 AM
1:00 PM8:00 AM
2:00 PM9:00 AM
3:00 PM10:00 AM
4:00 PM11:00 AM
5:00 PM12:00 PM
6:00 PM1:00 PM
7:00 PM2:00 PM
8:00 PM3:00 PM
9:00 PM4:00 PM
10:00 PM5:00 PM
11:00 PM6:00 PM

Daylight saving and how the gap changes

Around January HST is 4 hours behind CST. Around July it is 5 hours behind CST. That swing comes from one or both zones observing daylight saving on different schedules — the converter above always reflects the correct offset for the date you pick.

Frequently asked questions

Is HST ahead of or behind CST right now?
HST is currently 5 hours behind CST.
What is the current CST to HST time difference?
Right now the gap is 5 hours — HST is 5 hours behind CST.
Does the CST → HST offset change during the year?
Yes. Around January HST is 4 hours behind CST; around July it is 5 hours behind CST. The converter above always reflects the correct offset for the date you pick.
Does CST observe daylight saving time?
CST is itself the standard-time form. Central Standard Time (US) is in force at UTC-6 through the winter months; outside that window the same zone is on CDT (UTC-5).
Does HST observe daylight saving time?
No — Hawaii Standard Time stays at a fixed UTC offset year-round.
What time is 3 AM CST in HST?
3:00 AM CST is 10:00 PM (previous day) HST.
What time is 8 AM CST in HST?
8:00 AM CST is 3:00 AM HST.
What time is 9 AM CST in HST?
9:00 AM CST is 4:00 AM HST.
What time is 10 AM CST in HST?
10:00 AM CST is 5:00 AM HST.
What time is 11 AM CST in HST?
11:00 AM CST is 6:00 AM HST.
What time is 12 PM (noon) CST in HST?
12:00 PM CST is 7:00 AM HST.
What time is 2 PM CST in HST?
2:00 PM CST is 9:00 AM HST.
What time is 3 PM CST in HST?
3:00 PM CST is 10:00 AM HST.
What time is 4 PM CST in HST?
4:00 PM CST is 11:00 AM HST.
What time is 5 PM CST in HST?
5:00 PM CST is 12:00 PM HST.
What time is 9 PM CST in HST?
9:00 PM CST is 4:00 PM HST.
What time is 10 PM CST in HST?
10:00 PM CST is 5:00 PM HST.
When is the best time to schedule a call between CST and HST?
The working-hours overlap (09:00–17:00 in both zones) runs roughly 2:00 PM – 5:00 PM CST (≈ 3 hours). The midpoint of that window — 3:30 PM CST, 10:30 AM HST — is the safest single slot to propose for a live call.
What time zone does CST refer to?
CST refers to Central Standard Time (US) (IANA: America/Chicago).
What time zone does HST refer to?
HST refers to Hawaii Standard Time (IANA: Pacific/Honolulu).
Is CST on this page the same as other zones that share the letters "CST"?
On Clockjumper, CST refers to US Central Standard Time (UTC−6). The same three letters are also used for China Standard Time (UTC+8) and Cuba Standard Time (UTC−5) — check the city or UTC offset to be sure which is meant.
Is HST on this page the same as other zones that share the letters "HST"?
Hawaii Standard Time is UTC−10 year-round. Hawaii does not observe daylight saving time.

Related conversions

Learn more