Clockjumper

Timezone conversion

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

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

CST is currently 5 hours ahead of HST.

HST • HST (UTC-10)
7:16 AM
Wednesday, Jul 8
CST • CDT (UTC-5)
12:16 PM
Wednesday, Jul 8

Abbreviation disambiguation

HST here means Hawaii Standard Time. Note: no DST

CST here means Central Standard Time (US). Note: collides: China Standard Time, Cuba Standard Time

Interactive converter

12:00PM

12
:
00

Full HST to CST conversion table

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

Daylight saving and how the gap changes

Around January the HST → CST offset is 4 hours ahead of HST. Around July it is 5 hours ahead of HST. 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 CST ahead of or behind HST right now?
CST is currently 5 hours ahead of HST.
What is the current HST to CST time difference?
Right now the gap is 5 hours ahead — CST is 5 hours ahead of HST.
Does the HST → CST offset change during the year?
Yes. Around January the offset is 4 hours ahead of HST; around July it is 5 hours ahead of HST. The converter above always reflects the correct offset for the date you pick.
Does HST observe daylight saving time?
No — Hawaii Standard Time stays at a fixed UTC offset year-round.
Does CST observe daylight saving time?
Yes — Central Standard Time (US) observes DST, so its UTC offset shifts by 1 hour(s) between winter and summer.
What time is 9 AM HST in CST?
9:00 AM HST is 2:00 PM CST.
What time is 12 PM (noon) HST in CST?
12:00 PM HST is 5:00 PM CST.
What time is 5 PM HST in CST?
5:00 PM HST is 10:00 PM CST.
When is the best time to schedule a call between HST and CST?
The working-hours overlap (09:00–17:00 in both zones) runs roughly 9:00 AM – 12:00 PM HST (≈ 3 hours). Mid-morning HST is usually the safest window for a live call.
What time zone does HST refer to?
HST refers to Hawaii Standard Time (IANA: Pacific/Honolulu).
What time zone does CST refer to?
CST refers to Central Standard Time (US) (IANA: America/Chicago).
Is HST on this page the same as other zones that share the letters "HST"?
On Clockjumper, HST means Hawaii Standard Time. Disambiguation: no DST
Is CST on this page the same as other zones that share the letters "CST"?
On Clockjumper, CST means Central Standard Time (US). Disambiguation: collides: China Standard Time, Cuba Standard Time

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