What is HST in CST?
Central Time is 5 hours ahead
Hawaii Standard Time is on UTC−10:00 and Central Time is on UTC−5:00 right now. Central Time is on daylight saving, so its clocks read CDT. The gap changes during the year — see below.
- Time in Honolulu
- 4:14 pm
- Time in Chicago
- 9:14 pm
- Difference
- +5 h
- Next clock change
- November 1, 2026
Convert a time
CDT — Central Time
9:00 pm
Tue
When the difference changes
Hawaii Standard Time and Central Time do not change their clocks on the same dates, so the gap between them is not the same all year. Most converters show only today’s figure. These are the periods ahead:
- Now – November 1, 2026Central Time is 5 hours ahead
- November 1, 2026 – March 14, 2027Central Time is 4 hours ahead
- March 14, 2027 – onwardsCentral Time is 5 hours ahead
Periods shorter than a day are not listed: both zones change at 2am in their own local time, so there are a few hours on each transition date when the gap is briefly something else.
Daylight saving
Hawaii Standard Time
Hawaii Standard Time stays on HST all year, so its offset from UTC never moves.
Central Time
Clocks go back one hour at 2am local time, becoming CST.
HST to CST conversion table
Every hour of Tuesday, September 22, 2026, converted from Hawaii Standard Time to Central Time. 5 of the 24 hours fall on a different calendar day in Chicago, which is marked.
- 12:00 am HST
- 5:00 am CDT
- 1:00 am HST
- 6:00 am CDT
- 2:00 am HST
- 7:00 am CDT
- 3:00 am HST
- 8:00 am CDT
- 4:00 am HST
- 9:00 am CDT
- 5:00 am HST
- 10:00 am CDT
- 6:00 am HST
- 11:00 am CDT
- 7:00 am HST
- 12:00 pm CDT
- 8:00 am HST
- 1:00 pm CDT
- 9:00 am HST
- 2:00 pm CDT
- 10:00 am HST
- 3:00 pm CDT
- 11:00 am HST
- 4:00 pm CDT
- 12:00 pm HST
- 5:00 pm CDT
- 1:00 pm HST
- 6:00 pm CDT
- 2:00 pm HST
- 7:00 pm CDT
- 3:00 pm HST
- 8:00 pm CDT
- 4:00 pm HST
- 9:00 pm CDT
- 5:00 pm HST
- 10:00 pm CDT
- 6:00 pm HST
- 11:00 pm CDT
- 7:00 pm HST
- 12:00 am CDT+1 day
- 8:00 pm HST
- 1:00 am CDT+1 day
- 9:00 pm HST
- 2:00 am CDT+1 day
- 10:00 pm HST
- 3:00 am CDT+1 day
- 11:00 pm HST
- 4:00 am CDT+1 day
Scheduling between the two
Working hours overlap from 9:00 am to 1:00 pm HST, which is 2:00 pm to 6:00 pm CDT. Anything inside that window falls in the normal working day at both ends.
A note on CST: it can also mean China Standard Time (UTC+8) and Cuba Standard Time (UTC−5). This page means US Central Time.
Hawaii Standard Time (HST) is used in all of Hawaii, which does not observe daylight saving
Central Time (CDT) is used in Dallas, Houston, Mexico City and Winnipeg