PHT to Tehran
-4h 30mPHT
PHTSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
PHT and IRST on the World Map
The map below highlights the PHT (Philippine Time) and IRST (Iran Standard 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.
IRST – Iran Standard Time
UTC+03:30Iran Standard Time (IRST) is the time zone for Iran, 3 hours and 30 minutes ahead of UTC.
- •IRST is one of only a few time zones with a 30-minute offset.
- •Iran observes daylight saving time, switching to IRDT (UTC+04:30).
- •Tehran has a metropolitan population of over 16 million.
About Tehran
WikipediaTehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
Iran Standard Time (IRST) is one of few timezones with a 30-minute offset (UTC+3:30).
Time Conversion Guide: PHT to Tehran
PHT runs on Philippine Time (PHT) at UTC+08:00. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts PHT 4 hours 30 minutes behind Tehran — a difference of -4h 30m at the current offsets.
In practice, when it is 9:00 AM in PHT it is 4:30 AM in Tehran. Midnight in PHT is 7:30 PM in Tehran. Neither zone observes daylight saving time, so the offset between them stays constant all year.
PHT to Tehran time conversion table
| PHT (PHT) | Tehran (IRST) | Day |
|---|---|---|
| 12:00 AM | 7:30 PM | previous day |
| 6:00 AM | 1:30 AM | same day |
| 7:00 AM | 2:30 AM | same day |
| 8:00 AM | 3:30 AM | same day |
| 9:00 AM | 4:30 AM | same day |
| 12:00 PM | 7:30 AM | same day |
| 3:00 PM | 10:30 AM | same day |
| 5:00 PM | 12:30 PM | same day |
| 6:00 PM | 1:30 PM | same day |
| 9:00 PM | 4:30 PM | same day |
Why people convert PHT to Tehran time
- Scheduling a call from PHT to Tehran: a 10:00 AM start in PHT lands at 5:30 AM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both PHT and Tehran are inside the 9-to-5 working day between 1:30 PM and 5:00 PM PHT time (9:00 AM–12:30 PM IRST). That is roughly 3 hours 30 minutes of usable overlap.
- Booking travel or deliveries: tracking Tehran local time against PHT keeps pickup windows and arrival estimates honest across the -4h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM PHT" is unambiguous; "3 PM" across a -4h 30m gap is not.
- Block 1:30 PM–5:00 PM PHT as the recurring meeting window if you work primarily from PHT and need Tehran 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 IRST (Iran Standard Time)
Iran Standard Time (IRST) is one of the few time zones with a 30-minute offset. Iran observes daylight saving time (IRDT, UTC+04:30) from late March to late September. Tehran, the capital, is one of the largest cities in the Middle East.
Best time to call between PHT and Tehran
Both PHT and Tehran sit inside the 9 AM – 5 PM working day between 1:30 PM–5:00 PM PHT, which is 9:00 AM–12:30 PM IRST. That gives roughly 3 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
PHT and Tehran overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
PHT is 4 hours 30 minutes behind Tehran (PHT UTC+08:00 → IRST UTC+03:30). The shared working window is 1:30 PM–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 Tehran?
PHT (PHT, UTC+08:00) is 4 hours 30 minutes behind Tehran (IRST, UTC+03:30). The gap is currently -4h 30m.
How do I convert PHT time to Tehran time?
Add -4h 30m to PHT local time. For example, 9:00 AM in PHT is 4:30 AM in Tehran.
What time is it in Tehran right now?
Tehran uses IRST at UTC+03:30. Use the live converter at the top of this page — it updates in real time and already accounts for the -4h 30m offset from PHT.
What is the best time to call Tehran from PHT?
Call between 1:30 PM and 5:00 PM PHT — that maps to 9:00 AM–12:30 PM IRST and keeps both parties inside the working day.
Which is behind, PHT or Tehran?
PHT is 4 hours 30 minutes behind Tehran. When it is 12:00 PM in PHT it is 7:30 AM in Tehran.
Do PHT and Tehran use different time zones?
PHT uses PHT at UTC+08:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are Asia/Manila and Asia/Tehran.
Does daylight saving time affect the PHT–Tehran difference?
Neither zone observes daylight saving time, so the -4h 30m offset between PHT and Tehran 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 Tehran?
Not normally. The -4h 30m gap only pushes the date over the previous day.
What is the time difference between PHT and Tehran?
Tehran is -4h 30m from PHT.
What timezone is PHT in?
PHT operates on its local timezone.
What timezone is Tehran in?
Tehran operates on Iran Standard Time (IRST), UTC+3:30. Iran's unique half-hour offset makes Tehran time distinctive for regional business coordination.
What are the business hours in Tehran?
Standard business hours in Tehran are 8:00 AM - 4:00 PM IRST.
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 IRST timezone?
Major cities in the IRST timezone include Tehran, Isfahan, Mashhad, Tabriz, Shiraz, Karaj.
What is the UTC offset for IRST?
Iran Standard Time (IRST) is at UTC+03:30. During daylight saving time, it shifts to IRDT.
What should I know about the IRST timezone?
IRST is one of only a few time zones with a 30-minute offset. Iran observes daylight saving time, switching to IRDT (UTC+04:30).
When is it midnight in PHT, what time is it in Tehran?
When it is 12:00 AM (midnight) in PHT (PHT), it is -4h 30m later in Tehran (IRST).
Related Developer Tools
Explore more tools that work great with timezone conversions for international teams:
Related Timezone Conversions
More PHT time conversions
- pht to manila
- pht to philippines
- pht to new york
- pht to london
- pht to dubai
- pht to tokyo
- pht to singapore
- pht to sydney
- pht to los angeles
- pht to paris
- pht to delhi
- pht to mumbai
- pht to berlin
- pht to hong kong
- pht to toronto
- pht to kathmandu
- new york to pht
- london to pht
- dubai to pht
- tokyo to pht
- singapore to pht
- sydney to pht
- los angeles to pht
- paris to pht
- delhi to pht
- mumbai to pht
- berlin to pht
- hong kong to pht
- toronto to pht
- kathmandu to pht
See every conversion from PHT →·See every conversion from Tehran →