HST to CDT
+5hHST
HSTSOURCECDT
CDTGreen rows indicate typical business hours (9 AM - 5 PM)
HST and CDT on the World Map
The map below highlights the HST (Hawaii Standard Time) and CDT (Central Daylight Time) timezone regions across the globe.
HST – Hawaii Standard Time
UTC-10:00Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.
- •Hawaii does not observe daylight saving time.
- •HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
- •Hawaii is one of only two US states that don't observe DST (the other is Arizona).
CDT – Central Daylight Time
UTC-05:00Central Daylight Time (CDT) is the daylight saving offset in the Central Time Zone, 5 hours behind UTC.
- •CDT is the same offset as EST (UTC-05:00), which can cause confusion.
- •CDT runs from the second Sunday in March to the first Sunday in November.
HST vs CDT: Offsets, DST and Best Call Times
HST runs on Hawaii Standard Time (HST) at UTC-10:00. CDT runs on Central Daylight Time (CDT) at UTC-05:00. That puts HST 5 hours ahead of CDT — a difference of +5h at the current offsets.
In practice, when it is 9:00 AM in HST it is 2:00 PM in CDT. Midnight in HST is 5:00 AM in CDT. Neither zone observes daylight saving time, so the offset between them stays constant all year.
HST to CDT time conversion table
| HST (HST) | CDT (CDT) | Day |
|---|---|---|
| 12:00 AM | 5:00 AM | same day |
| 6:00 AM | 11:00 AM | same day |
| 7:00 AM | 12:00 PM | same day |
| 8:00 AM | 1:00 PM | same day |
| 9:00 AM | 2:00 PM | same day |
| 12:00 PM | 5:00 PM | same day |
| 3:00 PM | 8:00 PM | same day |
| 5:00 PM | 10:00 PM | same day |
| 6:00 PM | 11:00 PM | same day |
| 9:00 PM | 2:00 AM | next day |
Why people convert HST to CDT time
- Scheduling a call from HST to CDT: a 10:00 AM start in HST lands at 3:00 PM in CDT, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both HST and CDT are inside the 9-to-5 working day between 9:00 AM and 12:00 PM HST time (2:00 PM–5:00 PM CDT). That is roughly 3 hours of usable overlap.
- Watching a live event or market open: HST viewers need 2:00 PM in CDT to catch a 9:00 AM start there, and 7:00 PM if the event is anchored to HST.
- Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +5h gap is not.
- Block 9:00 AM–12:00 PM HST as the recurring meeting window if you work primarily from HST and need CDT colleagues present.
About HST (Hawaii Standard Time)
Hawaii Standard Time (HST) is used in the state of Hawaii and does not observe daylight saving time. This makes HST one of the most consistent time zones in the US. The Hawaiian Islands are among the last places on Earth to see a new calendar day.
About CDT (Central Daylight Time)
Central Daylight Time (CDT) is observed during summer months in the US and Canadian portions of the Central Time Zone. Clocks are moved forward by one hour, aligning with Eastern Standard Time (EST). Most of Mexico and Central America do not observe CDT, staying on CST year-round.
Best time to call between HST and CDT
Both HST and CDT sit inside the 9 AM – 5 PM working day between 9:00 AM–12:00 PM HST, which is 2:00 PM–5:00 PM CDT. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
HST and CDT overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
HST is 5 hours ahead of CDT (HST UTC-10:00 → CDT UTC-05:00). The shared working window is 9:00 AM–12:00 PM HST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
HST
Does not observe DST
CDT
☀ Currently in DST
Standard: UTC-06:00 · DST: UTC-05:00
Clocks fall back on Sun, Nov 1, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between HST and CDT?
HST (HST, UTC-10:00) is 5 hours ahead of CDT (CDT, UTC-05:00). The gap is currently +5h.
How do I convert HST time to CDT time?
Add +5h to HST local time. For example, 9:00 AM in HST is 2:00 PM in CDT.
What time is it in CDT right now?
CDT uses CDT at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +5h offset from HST.
What is the best time to call CDT from HST?
Call between 9:00 AM and 12:00 PM HST — that maps to 2:00 PM–5:00 PM CDT and keeps both parties inside the working day.
Which is ahead, HST or CDT?
HST is 5 hours ahead of CDT. When it is 12:00 PM in HST it is 5:00 PM in CDT.
Does daylight saving time affect the HST–CDT difference?
Neither zone observes daylight saving time, so the +5h offset between HST and CDT is fixed all year.
Which other cities share HST's time zone?
HST also covers Honolulu, Hilo, Kailua, Pearl City, Kapolei.
Which countries use HST, HST's zone?
HST is used in United States (Hawaii).
Is there a day difference between HST and CDT?
Not normally. The +5h gap only pushes the date over for late-evening times.
What is the time difference between HST and CDT?
CDT is +5h from HST.
What timezone is HST in?
HST operates on its local timezone.
What timezone is CDT in?
CDT operates on its local timezone.
Which countries use HST (Hawaii Standard Time)?
HST is used in United States (Hawaii).
Does HST observe daylight saving time?
No, HST does not observe daylight saving time and remains at UTC-10:00 year-round.
What are some interesting facts about HST?
Hawaii does not observe daylight saving time. HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
Which cities are in the CDT timezone?
Major cities in the CDT timezone include Chicago, Houston, Dallas, Austin, Winnipeg, Nashville.
What is the UTC offset for CDT?
Central Daylight Time (CDT) is at UTC-05:00. During daylight saving time, it shifts to CST.
What should I know about the CDT timezone?
CDT is the same offset as EST (UTC-05:00), which can cause confusion. CDT runs from the second Sunday in March to the first Sunday in November.
When is it midnight in HST, what time is it in CDT?
When it is 12:00 AM (midnight) in HST (HST), it is +5h later in CDT (CDT).
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See every conversion from HST →·See every conversion from CDT →