PDT to HST
-3hPDT
PDTSOURCEHST
HSTGreen rows indicate typical business hours (9 AM - 5 PM)
PDT and HST on the World Map
The map below highlights the PDT (Pacific Daylight Time) and HST (Hawaii Standard Time) timezone regions across the globe.
PDT – Pacific Daylight Time
UTC-07:00Pacific Daylight Time (PDT) is the daylight saving offset on the US/Canada Pacific coast, 7 hours behind UTC.
- •PDT aligns with MST at UTC-07:00.
- •Tech company earnings calls often reference PDT/PST times.
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).
PDT to HST Time Difference – Complete Guide
PDT runs on Pacific Daylight Time (PDT) at UTC-07:00. HST runs on Hawaii Standard Time (HST) at UTC-10:00. That puts PDT 3 hours behind HST — a difference of -3h at the current offsets.
In practice, when it is 9:00 AM in PDT it is 6:00 AM in HST. Midnight in PDT is 9:00 PM in HST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PDT to HST time conversion table
| PDT (PDT) | HST (HST) | Day |
|---|---|---|
| 12:00 AM | 9:00 PM | previous day |
| 6:00 AM | 3:00 AM | same day |
| 7:00 AM | 4:00 AM | same day |
| 8:00 AM | 5:00 AM | same day |
| 9:00 AM | 6:00 AM | same day |
| 12:00 PM | 9:00 AM | same day |
| 3:00 PM | 12:00 PM | same day |
| 5:00 PM | 2:00 PM | same day |
| 6:00 PM | 3:00 PM | same day |
| 9:00 PM | 6:00 PM | same day |
Why people convert PDT to HST time
- Scheduling a call from PDT to HST: a 10:00 AM start in PDT lands at 7:00 AM in HST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both PDT and HST are inside the 9-to-5 working day between 12:00 PM and 5:00 PM PDT time (9:00 AM–2:00 PM HST). That is roughly 5 hours of usable overlap.
- Coordinating a PDT-based team with HST 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 PDT" is unambiguous; "3 PM" across a -3h gap is not.
- Block 12:00 PM–5:00 PM PDT as the recurring meeting window if you work primarily from PDT and need HST colleagues present.
About PDT (Pacific Daylight Time)
Pacific Daylight Time (PDT) is observed from March to November on the Pacific coast. During PDT, the west coast is 7 hours behind UTC and only 2 hours behind the east coast's EDT.
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 PDT and HST
Both PDT and HST sit inside the 9 AM – 5 PM working day between 12:00 PM–5:00 PM PDT, which is 9:00 AM–2:00 PM HST. That gives roughly 5 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
PDT and HST share 5 hours of working-hours overlap (12:00 PM–5:00 PM PDT), so scheduling a live meeting is straightforward.
PDT is 3 hours behind HST (PDT UTC-07:00 → HST UTC-10:00). The shared working window is 12:00 PM–5:00 PM PDT. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
PDT
☀ Currently in DST
Standard: UTC-08:00 · DST: UTC-07:00
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 PDT and HST?
PDT (PDT, UTC-07:00) is 3 hours behind HST (HST, UTC-10:00). The gap is currently -3h.
How do I convert PDT time to HST time?
Add -3h to PDT local time. For example, 9:00 AM in PDT is 6:00 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 -3h offset from PDT.
What is the best time to call HST from PDT?
Call between 12:00 PM and 5:00 PM PDT — that maps to 9:00 AM–2:00 PM HST and keeps both parties inside the working day.
Which is behind, PDT or HST?
PDT is 3 hours behind HST. When it is 12:00 PM in PDT it is 9:00 AM in HST.
Does daylight saving time affect the PDT–HST difference?
Neither zone observes daylight saving time, so the -3h offset between PDT and HST is fixed all year.
Which other cities share PDT's time zone?
PDT also covers Los Angeles, San Francisco, Seattle, Vancouver, Portland.
Which countries use PDT, PDT's zone?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Is there a day difference between PDT and HST?
Not normally. The -3h gap only pushes the date over the previous day.
What is the time difference between PDT and HST?
HST is -3h from PDT.
What timezone is PDT in?
PDT operates on its local timezone.
What timezone is HST in?
HST operates on its local timezone.
Which countries use PDT (Pacific Daylight Time)?
PDT is used in United States (Pacific), Canada (British Columbia), Mexico (Baja California).
Does PDT observe daylight saving time?
Yes, PDT switches to PST during summer months.
What are some interesting facts about PDT?
PDT aligns with MST at UTC-07:00. Tech company earnings calls often reference PDT/PST times.
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 PDT, what time is it in HST?
When it is 12:00 AM (midnight) in PDT (PDT), it is -3h later in HST (HST).
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See every conversion from PDT →·See every conversion from HST →