HST to KST Converter

KST is 19h 0m ahead of HST. When it's 12:00 PM HST, it's 7:00 AM (+1 day) KST.

From

HST · UTC-10

6:09:47PM

Hawaii Standard Time

e.g. Honolulu

To

KST · UTC+9

1:09:47PM

Korea Standard Time

e.g. Seoul

Open in World ClockKST → HST
9:00 AM HST=4:00 AM(+1 day) KST
12:00 PM HST=7:00 AM(+1 day) KST
5:00 PM HST=12:00 PM(+1 day) KST

Hourly conversion (HST → KST)

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

Shaded rows are within standard working hours (8am–6pm) on both sides.

Hawaii does not observe daylight saving time, so HST (UTC−10) applies year-round.

More HST conversions

Frequently asked questions

What is the time difference between HST and KST?
KST is 19h 0m ahead of HST. HST is UTC-10 and KST is UTC+9.
What is 12:00 PM HST in KST?
12:00 PM HST is 7:00 AM (+1 day) KST.
Does HST change for daylight saving time?
Hawaii does not observe daylight saving time, so HST (UTC−10) applies year-round.