Does it account for Daylight Saving Time?

Yes, our converter uses the IANA timezone database, which includes all current DST rules for every timezone in the world.

UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. All timezones are defined as offsets from UTC.

Can I compare multiple timezones at once?

Yes, you can add multiple cities or timezones and see the equivalent times side by side.

How many timezones are there in the world?

There are 38 distinct UTC offsets in use, ranging from UTC-12 to UTC+14. This includes half-hour (UTC+5:30 India, UTC+9:30 Australia) and 45-minute offsets (UTC+5:45 Nepal, UTC+8:45 Australia).

What is the International Date Line?

The International Date Line (IDL) runs roughly along the 180° meridian in the Pacific Ocean. When you cross it westward, you gain a day; crossing eastward, you lose a day.

Why do some timezones have 30 or 45 minute offsets?

Countries chose offsets that best matched their solar noon. India uses UTC+5:30 and Nepal uses UTC+5:45 because standard hourly offsets didn't align well with their geography.

Which country has the most timezones?

France has the most (12 timezones) due to overseas territories. Russia spans 11 timezones. The US has 6 (including Hawaii and Alaska).

HST to EET

+12h

HST

HSTSOURCE

UTC-10:00

HH12

MM00

12:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

EET

UTC+03:00☀ DST active

HH12

MM00

(next day)00:00 (24-hr)

12 AM6 AM12 PM6 PM12 AM

Quick Reference

Time Conversion Table

HST

EET

12:00 AM

1:00 PM

2:00 AM

3:00 PM

4:00 AM

5:00 PM

6:00 AM

7:00 PM

8:00 AM

9:00 PM

10:00 AM

11:00 PM

12:00 PM

1:00 AM+1

2:00 PM

3:00 AM+1

4:00 PM

5:00 AM+1

6:00 PM

7:00 AM+1

8:00 PM

9:00 AM+1

10:00 PM

11:00 AM+1

Green rows indicate typical business hours (9 AM - 5 PM)

HST and EET on the World Map

The map below highlights the HST (Hawaii Standard Time) and EET (Eastern European Time) timezone regions across the globe.

HST Zone

→

EET Zone

Explore all world timezones interactively →

HST – Hawaii Standard Time

UTC-10:00

Hawaii Standard Time (HST) is the time zone for the Hawaiian Islands, 10 hours behind UTC.

Countries in HST

United States (Hawaii)

Major Cities in HST

HonoluluHiloKailuaPearl CityKapolei

Key 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.
•Hawaii is one of only two US states that don't observe DST (the other is Arizona).

Daylight Saving:No – UTC-10:00 year-round

Learn more about HST on Wikipedia

EET – Eastern European Time

UTC+02:00

Eastern European Time (EET) is used in Eastern Europe, the Middle East, and northeastern Africa, 2 hours ahead of UTC.

Countries in EET

FinlandGreeceRomaniaBulgariaUkraineEgyptIsraelLebanonJordanLithuaniaLatviaEstoniaMoldovaLibyaSyriaPalestineCyprus

Major Cities in EET

CairoAthensHelsinkiBucharestKyivSofiaJerusalemTel AvivBeirutVilniusRigaTallinn

Key Facts about EET

•EET covers countries across three continents: Europe, Asia, and Africa.
•Cairo is the most populous city in the EET zone.
•Turkey used to be on EET but permanently moved to UTC+03:00 in 2016.
•Finland, the Baltic states, and Greece all use EET.

Daylight Saving:Yes – switches to EEST

Learn more about EET on Wikipedia

Comparing Time Zones: HST and EET

HST runs on Hawaii Standard Time (HST) at UTC-10:00. EET runs on Eastern European Time (EET) at UTC+02:00. That puts HST 12 hours ahead of EET — a difference of +12h at the current offsets.

In practice, when it is 9:00 AM in HST it is 9:00 PM in EET. Midnight in HST is 12:00 PM in EET. Neither zone observes daylight saving time, so the offset between them stays constant all year.

HST to EET time conversion table

HST (HST)	EET (EET)	Day
12:00 AM	12:00 PM	same day
6:00 AM	6:00 PM	same day
7:00 AM	7:00 PM	same day
8:00 AM	8:00 PM	same day
9:00 AM	9:00 PM	same day
12:00 PM	12:00 AM	next day
3:00 PM	3:00 AM	next day
5:00 PM	5:00 AM	next day
6:00 PM	6:00 AM	next day
9:00 PM	9:00 AM	next day

Why people convert HST to EET time

Scheduling a call from HST to EET: a 10:00 AM start in HST lands at 10:00 PM in EET, so you can confirm the slot without doing the arithmetic yourself.
Handling a +12h gap: HST and EET 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 EET is 9:00 PM in HST.
Booking travel or deliveries: tracking EET local time against HST keeps pickup windows and arrival estimates honest across the +12h offset.

Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +12h gap is not.
With a +12h gap there is no shared 9-to-5 window, so alternate the early start: one week HST takes the early slot, the next week EET 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 EET (Eastern European Time)

Eastern European Time (EET) covers a wide geographical area including Eastern Europe (Finland, Greece, Romania, Bulgaria, Ukraine), the Middle East (Israel, Lebanon, Jordan), and northeastern Africa (Egypt, Libya). During summer, most EET countries switch to Eastern European Summer Time (EEST, UTC+03:00). Turkey permanently moved to UTC+03:00 in 2016, effectively leaving EET.

Best time to call between HST and EET

With a +12h offset there is no overlap inside a normal 9 AM – 5 PM day. EET opens at 9:00 AM EET, which is 9:00 PM in HST, so real-time calls need an early-morning or late-evening slot on one side.

Business hours overlap

HST and EET have no shared working hours because of the +12h gap. Teams need to alternate early starts or rely on asynchronous handovers.

HST is 12 hours ahead of EET (HST UTC-10:00 → EET UTC+02:00). 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

EET

☀ Currently in DST

Standard: UTC+02:00 · DST: UTC+03:00

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:

⏳

History of Timekeeping

From sundials to atomic clocks - 5000 years of measuring time

🌍

How Time Zones Work

UTC, offsets, and why zones don't follow straight lines

☀️

Daylight Saving Time

DST dates, which countries observe it, and the ongoing debate

Frequently Asked Questions

What is the time difference between HST and EET?

HST (HST, UTC-10:00) is 12 hours ahead of EET (EET, UTC+02:00). The gap is currently +12h.

How do I convert HST time to EET time?

Add +12h to HST local time. For example, 9:00 AM in HST is 9:00 PM in EET.

What time is it in EET right now?

EET uses EET at UTC+02:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +12h offset from HST.