EDT to HST
-6hEDT
EDTSOURCEHST
HSTGreen rows indicate typical business hours (9 AM - 5 PM)
EDT and HST on the World Map
The map below highlights the EDT (Eastern Daylight Time) and HST (Hawaii Standard Time) timezone regions across the globe.
EDT – Eastern Daylight Time
UTC-04:00Eastern Daylight Time (EDT) is the daylight saving time observed in the Eastern Time Zone, 4 hours behind UTC.
- •EDT is observed from the second Sunday of March to the first Sunday of November.
- •During EDT, the US East Coast is only 4 hours behind London (instead of 5).
- •Not all EST locations switch to EDT – Panama and Jamaica stay on EST year-round.
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).
Time Conversion Guide: EDT to HST
EDT runs on Eastern Daylight Time (EDT) at UTC-04:00. HST runs on Hawaii Standard Time (HST) at UTC-10:00. That puts EDT 6 hours behind HST — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in EDT it is 3:00 AM in HST. Midnight in EDT is 6:00 PM in HST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
EDT to HST time conversion table
| EDT (EDT) | HST (HST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert EDT to HST time
- Scheduling a call from EDT to HST: a 10:00 AM start in EDT lands at 4:00 AM in HST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both EDT and HST are inside the 9-to-5 working day between 3:00 PM and 5:00 PM EDT time (9:00 AM–11:00 AM HST). That is roughly 2 hours of usable overlap.
- Booking travel or deliveries: tracking HST local time against EDT keeps pickup windows and arrival estimates honest across the -6h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM EDT" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM EDT as the recurring meeting window if you work primarily from EDT and need HST colleagues present.
About EDT (Eastern Daylight Time)
Eastern Daylight Time (EDT) is used during the summer months (second Sunday of March to the first Sunday of November) in the Eastern Time Zone. During EDT, clocks are advanced by one hour to take advantage of longer daylight hours. Not all locations in the Eastern Time Zone observe DST – Panama, Jamaica, and most of the Caribbean remain on EST year-round.
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 EDT and HST
Both EDT and HST sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM EDT, which is 9:00 AM–11:00 AM HST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
EDT and HST overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
EDT is 6 hours behind HST (EDT UTC-04:00 → HST UTC-10:00). The shared working window is 3:00 PM–5:00 PM EDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
EDT
☀ 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 EDT and HST?
EDT (EDT, UTC-04:00) is 6 hours behind HST (HST, UTC-10:00). The gap is currently -6h.
How do I convert EDT time to HST time?
Add -6h to EDT local time. For example, 9:00 AM in EDT is 3:00 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 -6h offset from EDT.
What is the best time to call HST from EDT?
Call between 3:00 PM and 5:00 PM EDT — that maps to 9:00 AM–11:00 AM HST and keeps both parties inside the working day.
Which is behind, EDT or HST?
EDT is 6 hours behind HST. When it is 12:00 PM in EDT it is 6:00 AM in HST.
Does daylight saving time affect the EDT–HST difference?
Neither zone observes daylight saving time, so the -6h offset between EDT and HST is fixed all year.
Which other cities share EDT's time zone?
EDT also covers New York City, Washington D.C., Toronto, Miami, Philadelphia, Atlanta, Boston, Montreal.
Which countries use EDT, EDT's zone?
EDT is used in United States (Eastern), Canada (Ontario, Quebec), Bahamas, Haiti, Turks and Caicos.
Is there a day difference between EDT and HST?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between EDT and HST?
HST is -6h from EDT.
What timezone is EDT in?
EDT operates on its local timezone.
What timezone is HST in?
HST operates on its local timezone.
Which countries use EDT (Eastern Daylight Time)?
EDT is used in United States (Eastern), Canada (Ontario, Quebec), Bahamas, Haiti, Turks and Caicos.
Does EDT observe daylight saving time?
Yes, EDT switches to EST during summer months.
What are some interesting facts about EDT?
EDT is observed from the second Sunday of March to the first Sunday of November. During EDT, the US East Coast is only 4 hours behind London (instead of 5).
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 EDT, what time is it in HST?
When it is 12:00 AM (midnight) in EDT (EDT), it is -6h later in HST (HST).
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See every conversion from EDT →·See every conversion from HST →