HST to Philippines
+18hHST
HSTSOURCEPhilippines
PHTGreen rows indicate typical business hours (9 AM - 5 PM)
HST and PHT on the World Map
The map below highlights the HST (Hawaii Standard Time) and PHT (Philippine 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).
PHT – Philippine Time
UTC+08:00Philippine Time (PHT, UTC+08:00) is the time zone for the Philippines, 8 hours ahead of UTC.
- •Philippine Time does not observe daylight saving, so UTC+08:00 is fixed all year.
- •PHT shares its offset with China, Hong Kong, Singapore and Malaysia.
- •Manila is one of the largest outsourcing hubs in the world.
- •The Philippines spans one time zone despite being an archipelago of over 7,600 islands.
Understanding the +18h Gap: HST vs Philippines
HST runs on Hawaii Standard Time (HST) at UTC-10:00. Philippines runs on Philippine Standard Time (PHT) at UTC+08:00. That puts HST 18 hours ahead of Philippines — a difference of +18h at the current offsets.
In practice, when it is 9:00 AM in HST it is 3:00 AM in Philippines on the next day. Midnight in HST is 6:00 PM in Philippines. Neither zone observes daylight saving time, so the offset between them stays constant all year.
HST to Philippines time conversion table
| HST (HST) | Philippines (PHT) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | same day |
| 6:00 AM | 12:00 AM | next day |
| 7:00 AM | 1:00 AM | next day |
| 8:00 AM | 2:00 AM | next day |
| 9:00 AM | 3:00 AM | next day |
| 12:00 PM | 6:00 AM | next day |
| 3:00 PM | 9:00 AM | next day |
| 5:00 PM | 11:00 AM | next day |
| 6:00 PM | 12:00 PM | next day |
| 9:00 PM | 3:00 PM | next day |
Why people convert HST to Philippines time
- Scheduling a call from HST to Philippines: a 10:00 AM start in HST lands at 4:00 AM in Philippines the next day, so you can confirm the slot without doing the arithmetic yourself.
- Handling a +18h gap: HST and Philippines 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 Philippines is 3:00 AM in HST.
- Watching a live event or market open: HST viewers need 3:00 AM in Philippines to catch a 9:00 AM start there, and 6:00 AM if the event is anchored to HST.
- Always state the zone abbreviation, not just the hour. "3:00 PM HST" is unambiguous; "3 PM" across a +18h gap is not.
- With a +18h gap there is no shared 9-to-5 window, so alternate the early start: one week HST takes the early slot, the next week Philippines 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 PHT (Philippine Time)
Philippine Time (PHT) is fixed at UTC+08:00 all year. The Philippines has not observed daylight saving time since 1978, apart from a brief trial in 1990. PHT shares its offset with China Standard Time, Hong Kong Time, Singapore Time, Malaysian Time and Australian Western Standard Time, which makes Manila a convenient bridge for scheduling across East and Southeast Asia. As one of the world's largest centres for business process outsourcing, Manila keeps overlapping hours with both Australia and, on early shifts, the United States, and its contact-centre schedules are usually planned around Manila local time.
Best time to call between HST and Philippines
With a +18h offset there is no overlap inside a normal 9 AM – 5 PM day. Philippines opens at 9:00 AM PHT, which is 3:00 AM in HST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
HST and Philippines have no shared working hours because of the +18h gap. Teams need to alternate early starts or rely on asynchronous handovers.
HST is 18 hours ahead of Philippines (HST UTC-10:00 → PHT UTC+08:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
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 Philippines?
HST (HST, UTC-10:00) is 18 hours ahead of Philippines (PHT, UTC+08:00). The gap is currently +18h.
How do I convert HST time to Philippines time?
Add +18h to HST local time. For example, 9:00 AM in HST is 3:00 AM in Philippines (next day).
What time is it in Philippines right now?
Philippines uses PHT at UTC+08:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +18h offset from HST.
What is the best time to call Philippines from HST?
There is no shared working-hours window because of the +18h gap. The closest option is 1:00 PM in HST, which is 7:00 AM in Philippines.
Which is ahead, HST or Philippines?
HST is 18 hours ahead of Philippines. When it is 12:00 PM in HST it is 6:00 AM in Philippines.
Do HST and Philippines use different time zones?
HST uses HST at UTC-10:00, while Philippines (Philippines) uses PHT at UTC+08:00. The IANA identifiers are Pacific/Honolulu and Asia/Manila.
Does daylight saving time affect the HST–Philippines difference?
Neither zone observes daylight saving time, so the +18h offset between HST and Philippines 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 Philippines?
Sometimes. The +18h gap is large enough that 8:00 PM or later in HST already falls on the next day in Philippines.
What is the time difference between HST and Philippines?
Philippines is +18h from HST.
What timezone is HST in?
HST operates on its local timezone.
What timezone is Philippines in?
Philippines 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 PHT timezone?
Major cities in the PHT timezone include Manila, Quezon City, Davao City, Cebu City, Zamboanga.
What is the UTC offset for PHT?
Philippine Time (PHT) is at UTC+08:00.
What should I know about the PHT timezone?
Philippine Time does not observe daylight saving, so UTC+08:00 is fixed all year. PHT shares its offset with China, Hong Kong, Singapore and Malaysia.
When is it midnight in HST, what time is it in Philippines?
When it is 12:00 AM (midnight) in HST (HST), it is +18h later in Philippines (PHT).
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