PHT to WIB
-1hPHT
PHTSOURCEWIB
WIBGreen rows indicate typical business hours (9 AM - 5 PM)
PHT and WIB on the World Map
The map below highlights the PHT (Philippine Time) and WIB (Western Indonesia Time) timezone regions across the globe.
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.
WIB – Western Indonesia Time
UTC+07:00Western Indonesia Time (WIB, UTC+07:00) covers Java, Sumatra and West Kalimantan, including Jakarta.
- •Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00).
- •Indonesia has not observed daylight saving time since 1964.
- •Jakarta is the largest city in Southeast Asia by population.
- •WIB shares the UTC+07:00 offset with Indochina Time.
Understanding the -1h Gap: PHT vs WIB
PHT runs on Philippine Time (PHT) at UTC+08:00. WIB runs on Western Indonesia Time (WIB) at UTC+07:00. That puts PHT 1 hour behind WIB — a difference of -1h at the current offsets.
In practice, when it is 9:00 AM in PHT it is 8:00 AM in WIB. Midnight in PHT is 11:00 PM in WIB. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PHT to WIB time conversion table
| PHT (PHT) | WIB (WIB) | Day |
|---|---|---|
| 12:00 AM | 11:00 PM | previous day |
| 6:00 AM | 5:00 AM | same day |
| 7:00 AM | 6:00 AM | same day |
| 8:00 AM | 7:00 AM | same day |
| 9:00 AM | 8:00 AM | same day |
| 12:00 PM | 11:00 AM | same day |
| 3:00 PM | 2:00 PM | same day |
| 5:00 PM | 4:00 PM | same day |
| 6:00 PM | 5:00 PM | same day |
| 9:00 PM | 8:00 PM | same day |
Why people convert PHT to WIB time
- Scheduling a call from PHT to WIB: a 10:00 AM start in PHT lands at 9:00 AM in WIB, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both PHT and WIB are inside the 9-to-5 working day between 10:00 AM and 5:00 PM PHT time (9:00 AM–4:00 PM WIB). That is roughly 7 hours of usable overlap.
- Coordinating a PHT-based team with WIB 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 PHT" is unambiguous; "3 PM" across a -1h gap is not.
- Block 10:00 AM–5:00 PM PHT as the recurring meeting window if you work primarily from PHT and need WIB colleagues present.
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.
About WIB (Western Indonesia Time)
Western Indonesia Time (WIB, Waktu Indonesia Barat) is one of Indonesia's three time zones, fixed at UTC+07:00 all year. It covers Java, Sumatra, West Kalimantan and the provinces around them — home to Jakarta, the country's capital and largest city, plus Surabaya and Bandung. Indonesia does not observe daylight saving time, so WIB never shifts. WIB shares its UTC+07:00 offset with Indochina Time (ICT) and Christmas Island Time, but is a distinct zone covering the western half of the Indonesian archipelago. The country's other zones are WITA (UTC+08:00) in the centre and WIT (UTC+09:00) in the east.
Best time to call between PHT and WIB
Both PHT and WIB sit inside the 9 AM – 5 PM working day between 10:00 AM–5:00 PM PHT, which is 9:00 AM–4:00 PM WIB. That gives roughly 7 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
PHT and WIB share 7 hours of working-hours overlap (10:00 AM–5:00 PM PHT), so scheduling a live meeting is straightforward.
PHT is 1 hour behind WIB (PHT UTC+08:00 → WIB UTC+07:00). The shared working window is 10:00 AM–5:00 PM PHT. 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 PHT and WIB?
PHT (PHT, UTC+08:00) is 1 hour behind WIB (WIB, UTC+07:00). The gap is currently -1h.
How do I convert PHT time to WIB time?
Add -1h to PHT local time. For example, 9:00 AM in PHT is 8:00 AM in WIB.
What time is it in WIB right now?
WIB uses WIB at UTC+07:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -1h offset from PHT.
What is the best time to call WIB from PHT?
Call between 10:00 AM and 5:00 PM PHT — that maps to 9:00 AM–4:00 PM WIB and keeps both parties inside the working day.
Which is behind, PHT or WIB?
PHT is 1 hour behind WIB. When it is 12:00 PM in PHT it is 11:00 AM in WIB.
Does daylight saving time affect the PHT–WIB difference?
Neither zone observes daylight saving time, so the -1h offset between PHT and WIB is fixed all year.
Which other cities share PHT's time zone?
PHT also covers Manila, Quezon City, Davao City, Cebu City, Zamboanga.
Which countries use PHT, PHT's zone?
PHT is used in Philippines.
Is there a day difference between PHT and WIB?
Not normally. The -1h gap only pushes the date over the previous day.
What is the time difference between PHT and WIB?
WIB is -1h from PHT.
What timezone is PHT in?
PHT operates on its local timezone.
What timezone is WIB in?
WIB operates on its local timezone.
Which countries use PHT (Philippine Time)?
PHT is used in Philippines.
Does PHT observe daylight saving time?
No, PHT does not observe daylight saving time and remains at UTC+08:00 year-round.
What are some interesting facts about PHT?
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.
Which cities are in the WIB timezone?
Major cities in the WIB timezone include Jakarta, Surabaya, Bandung, Medan, Palembang.
What is the UTC offset for WIB?
Western Indonesia Time (WIB) is at UTC+07:00.
What should I know about the WIB timezone?
Indonesia spans three time zones: WIB (UTC+07:00), WITA (UTC+08:00) and WIT (UTC+09:00). Indonesia has not observed daylight saving time since 1964.
When is it midnight in PHT, what time is it in WIB?
When it is 12:00 AM (midnight) in PHT (PHT), it is -1h later in WIB (WIB).
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