EST to HST
-5hEST
ESTSOURCEHST
HSTGreen rows indicate typical business hours (9 AM - 5 PM)
EST and HST on the World Map
The map below highlights the EST (Eastern Standard Time) and HST (Hawaii Standard Time) timezone regions across the globe.
EST – Eastern Standard Time
UTC-05:00Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.
- •EST is the most widely used time zone in the United States by population.
- •The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
- •23 US states are fully or partially in the Eastern Time Zone.
- •EST was established by the Standard Time Act of 1918.
- •Over 47% of the US population lives in the Eastern Time Zone.
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).
Comparing Time Zones: EST and HST
EST runs on Eastern Standard Time (EST) at UTC-05:00. HST runs on Hawaii Standard Time (HST) at UTC-10:00. That puts EST 5 hours behind HST — a difference of -5h at the current offsets.
In practice, when it is 9:00 AM in EST it is 4:00 AM in HST. Midnight in EST is 7:00 PM in HST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
EST to HST time conversion table
| EST (EST) | HST (HST) | Day |
|---|---|---|
| 12:00 AM | 7:00 PM | previous day |
| 6:00 AM | 1:00 AM | same day |
| 7:00 AM | 2:00 AM | same day |
| 8:00 AM | 3:00 AM | same day |
| 9:00 AM | 4:00 AM | same day |
| 12:00 PM | 7:00 AM | same day |
| 3:00 PM | 10:00 AM | same day |
| 5:00 PM | 12:00 PM | same day |
| 6:00 PM | 1:00 PM | same day |
| 9:00 PM | 4:00 PM | same day |
Why people convert EST to HST time
- Scheduling a call from EST to HST: a 10:00 AM start in EST lands at 5:00 AM in HST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both EST and HST are inside the 9-to-5 working day between 2:00 PM and 5:00 PM EST time (9:00 AM–12:00 PM HST). That is roughly 3 hours of usable overlap.
- Watching a live event or market open: EST viewers need 4:00 AM in HST to catch a 9:00 AM start there, and 5:00 AM if the event is anchored to EST.
- Always state the zone abbreviation, not just the hour. "3:00 PM EST" is unambiguous; "3 PM" across a -5h gap is not.
- Block 2:00 PM–5:00 PM EST as the recurring meeting window if you work primarily from EST and need HST colleagues present.
About EST (Eastern Standard Time)
Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.
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.
Best time to call between EST and HST
Both EST and HST sit inside the 9 AM – 5 PM working day between 2:00 PM–5:00 PM EST, which is 9:00 AM–12:00 PM HST. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
EST and HST overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
EST is 5 hours behind HST (EST UTC-05:00 → HST UTC-10:00). The shared working window is 2:00 PM–5:00 PM EST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
EST
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
Clocks fall back on Sun, Nov 1, 2026
HST
Does not observe DST
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 EST and HST?
EST (EST, UTC-05:00) is 5 hours behind HST (HST, UTC-10:00). The gap is currently -5h.
How do I convert EST time to HST time?
Add -5h to EST local time. For example, 9:00 AM in EST is 4:00 AM in HST.
What time is it in HST right now?
HST uses HST at UTC-10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -5h offset from EST.
What is the best time to call HST from EST?
Call between 2:00 PM and 5:00 PM EST — that maps to 9:00 AM–12:00 PM HST and keeps both parties inside the working day.
Which is behind, EST or HST?
EST is 5 hours behind HST. When it is 12:00 PM in EST it is 7:00 AM in HST.
Does daylight saving time affect the EST–HST difference?
Neither zone observes daylight saving time, so the -5h offset between EST and HST is fixed all year.
Which other cities share EST's time zone?
EST also covers New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal and 8 more.
Which countries use EST, EST's zone?
EST is used in United States (Eastern), Canada (Ontario, Quebec), Mexico (Quintana Roo), Panama, Jamaica, Cayman Islands, Haiti, Bahamas and 4 more.
Is there a day difference between EST and HST?
Not normally. The -5h gap only pushes the date over the previous day.
What is the time difference between EST and HST?
HST is -5h from EST.
What timezone is EST in?
EST operates on its local timezone.
What timezone is HST in?
HST operates on its local timezone.
Which countries use EST (Eastern Standard Time)?
EST is used in United States (Eastern), Canada (Ontario, Quebec), Mexico (Quintana Roo), Panama, Jamaica, Cayman Islands, and 6 more countries.
Does EST observe daylight saving time?
Yes, EST switches to EDT during summer months.
What are some interesting facts about EST?
EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
Which cities are in the HST timezone?
Major cities in the HST timezone include Honolulu, Hilo, Kailua, Pearl City, Kapolei.
What is the UTC offset for HST?
Hawaii Standard Time (HST) is at UTC-10:00.
What should I know about the HST timezone?
Hawaii does not observe daylight saving time. HST is 5 hours behind EST in winter and 6 hours behind EDT in summer.
When is it midnight in EST, what time is it in HST?
When it is 12:00 AM (midnight) in EST (EST), it is -5h later in HST (HST).
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See every conversion from EST →·See every conversion from HST →