HST to CET
+11hHST
HSTSOURCECET
CETGreen rows indicate typical business hours (9 AM - 5 PM)
HST and CET on the World Map
The map below highlights the HST (Hawaii Standard Time) and CET (Central European 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).
CET – Central European Time
UTC+01:00Central European Time (CET) is used across most of Western and Central Europe, 1 hour ahead of UTC.
- •CET covers more European countries than any other time zone.
- •Spain uses CET despite being geographically aligned with GMT/WET.
- •The Frankfurt Stock Exchange, Euronext (Amsterdam/Paris), and Borsa Italiana operate on CET.
- •Over 500 million people live in the CET time zone.
- •France moved to CET during the German occupation in WWII and never switched back.
HST to CET Time Difference – Complete Guide
HST runs on Hawaii Standard Time (HST) at UTC-10:00. CET runs on Central European Time (CET) at UTC+01:00. That puts HST 11 hours ahead of CET — a difference of +11h at the current offsets.
In practice, when it is 9:00 AM in HST it is 8:00 PM in CET. Midnight in HST is 11:00 AM in CET. Neither zone observes daylight saving time, so the offset between them stays constant all year.
HST to CET time conversion table
| HST (HST) | CET (CET) | Day |
|---|---|---|
| 12:00 AM | 11:00 AM | same day |
| 6:00 AM | 5:00 PM | same day |
| 7:00 AM | 6:00 PM | same day |
| 8:00 AM | 7:00 PM | same day |
| 9:00 AM | 8:00 PM | same day |
| 12:00 PM | 11:00 PM | same day |
| 3:00 PM | 2:00 AM | next day |
| 5:00 PM | 4:00 AM | next day |
| 6:00 PM | 5:00 AM | next day |
| 9:00 PM | 8:00 AM | next day |
Why people convert HST to CET time
- Scheduling a call from HST to CET: a 10:00 AM start in HST lands at 9:00 PM in CET, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +11h gap: HST and CET have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in CET is 8:00 PM in HST.
- Coordinating a HST-based team with CET contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +11h gap is not.
- With a +11h gap there is no shared 9-to-5 window, so alternate the early start: one week HST takes the early slot, the next week CET does.
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 CET (Central European Time)
Central European Time (CET) is the standard time zone for most of Europe, covering over 30 countries from Spain to Poland, and from Norway to Italy. CET is 1 hour ahead of GMT and is used by the European Union's most populous nations. During summer, most CET countries switch to Central European Summer Time (CEST, UTC+02:00). Major European financial markets in Frankfurt, Paris, and Amsterdam operate on CET.
Best time to call between HST and CET
With a +11h offset there is no overlap inside a normal 9 AM – 5 PM day. CET opens at 9:00 AM CET, which is 8:00 PM in HST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
HST and CET have no shared working hours because of the +11h gap. Teams need to alternate early starts or rely on asynchronous handovers.
HST is 11 hours ahead of CET (HST UTC-10:00 → CET UTC+01:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
HST
Does not observe DST
CET
☀ Currently in DST
Standard: UTC+01:00 · DST: UTC+02:00
Clocks fall back on Sun, Oct 25, 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 CET?
HST (HST, UTC-10:00) is 11 hours ahead of CET (CET, UTC+01:00). The gap is currently +11h.
How do I convert HST time to CET time?
Add +11h to HST local time. For example, 9:00 AM in HST is 8:00 PM in CET.
What time is it in CET right now?
CET uses CET at UTC+01:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +11h offset from HST.
What is the best time to call CET from HST?
There is no shared working-hours window because of the +11h gap. The closest option is 1:00 PM in HST, which is 12:00 AM in CET.
Which is ahead, HST or CET?
HST is 11 hours ahead of CET. When it is 12:00 PM in HST it is 11:00 PM in CET.
Does daylight saving time affect the HST–CET difference?
Neither zone observes daylight saving time, so the +11h offset between HST and CET 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 CET?
Not normally. The +11h gap only pushes the date over for late-evening times.
What is the time difference between HST and CET?
CET is +11h from HST.
What timezone is HST in?
HST operates on its local timezone.
What timezone is CET in?
CET 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 CET timezone?
Major cities in the CET timezone include Paris, Berlin, Rome, Madrid, Amsterdam, Brussels, Vienna, Warsaw.
What is the UTC offset for CET?
Central European Time (CET) is at UTC+01:00. During daylight saving time, it shifts to CEST.
What should I know about the CET timezone?
CET covers more European countries than any other time zone. Spain uses CET despite being geographically aligned with GMT/WET.
When is it midnight in HST, what time is it in CET?
When it is 12:00 AM (midnight) in HST (HST), it is +11h later in CET (CET).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More HST time conversions
- hst to honolulu
- hst to new york
- hst to london
- hst to dubai
- hst to tokyo
- hst to singapore
- hst to sydney
- hst to los angeles
- hst to paris
- hst to delhi
- hst to mumbai
- hst to berlin
- hst to hong kong
- hst to toronto
- hst to kathmandu
- new york to hst
- london to hst
- dubai to hst
- tokyo to hst
- singapore to hst
- sydney to hst
- los angeles to hst
- paris to hst
- delhi to hst
- mumbai to hst
- berlin to hst
- hong kong to hst
- toronto to hst
- kathmandu to hst
See every conversion from HST →·See every conversion from CET →