timeinusa.net

HST to CST — Hawaii to Central Time

Central Time is 4 hours ahead of Hawaii in winter and 5 hours ahead in summer.

The conversion rule

In the standard-time months, add 4 hours to Hawaii Time for Central Time: 12:00 PM HST is 4:00 PM CST. Since Hawaii ignores daylight saving, the addition becomes 5 hours while the mainland is on CDT — noon HST is then 5:00 PM in Chicago.

Winter allows 9:00 AM–1:00 PM HST / 1:00–5:00 PM CT; summer squeezes it to 9:00 AM–12:00 PM HST / 2:00–5:00 PM CT.

HST to CST conversion chart

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

This table converts on the winter gap of 4 hours. Between March 8 and November 1, 2026, while the Central zone observes CDT, add 5 hours.

Reverse direction: CST to HST (subtract 4 hours in winter, 5 in summer). Related: HST to EST, HST to MST, HST to PST.

Frequently asked questions

How many hours ahead is Chicago from Honolulu?

4 in winter, 5 in summer. Central Time observes DST and Hawaii does not, so the gap widens by an hour from March to November.

What is 10:00 AM HST in Central Time?

2:00 PM CST in winter and 3:00 PM CDT in summer.

When should Hawaii call Texas or Illinois?

First thing: a 9:00 AM HST call lands in Dallas or Chicago at 1:00 PM in winter or 2:00 PM in summer, leaving the afternoon to talk.