Portugal to Tehran
+2h 30mPortugal
WESTSOURCETehran
IRSTGreen rows indicate typical business hours (9 AM - 5 PM)
WEST and IRST on the World Map
The map below highlights the WEST (Western European Time) and IRST (Iran Standard Time) timezone regions across the globe.
WET – Western European Time
UTC+00:00Western European Time (WET) is the time zone for Portugal, Morocco, and the Canary Islands, same as UTC+00:00.
- •Portugal is the only mainland European country in the WET time zone.
- •The Canary Islands are on WET despite being part of Spain (which uses CET).
- •WET is identical to GMT and UTC+00:00.
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).
Understanding the +2h 30m Gap: Portugal vs Tehran
Portugal runs on Western European Summer Time (WEST) at UTC+01:00, currently observing daylight saving time. Tehran runs on Iran Standard Time (IRST) at UTC+03:30. That puts Portugal 2 hours 30 minutes ahead of Tehran — a difference of +2h 30m at the current offsets.
In practice, when it is 9:00 AM in Portugal it is 11:30 AM in Tehran. Midnight in Portugal is 2:30 AM in Tehran.Portugal observes daylight saving time while Tehran does not, so the gap narrows or widens by an hour part of the year.
Portugal to Tehran time conversion table
| Portugal (WEST) | Tehran (IRST) | Day |
|---|---|---|
| 12:00 AM | 2:30 AM | same day |
| 6:00 AM | 8:30 AM | same day |
| 7:00 AM | 9:30 AM | same day |
| 8:00 AM | 10:30 AM | same day |
| 9:00 AM | 11:30 AM | same day |
| 12:00 PM | 2:30 PM | same day |
| 3:00 PM | 5:30 PM | same day |
| 5:00 PM | 7:30 PM | same day |
| 6:00 PM | 8:30 PM | same day |
| 9:00 PM | 11:30 PM | same day |
Why people convert Portugal to Tehran time
- Scheduling a call from Portugal to Tehran: a 10:00 AM start in Portugal lands at 12:30 PM in Tehran, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Portugal and Tehran are inside the 9-to-5 working day between 9:00 AM and 2:30 PM WEST time (11:30 AM–5:00 PM IRST). That is roughly 5 hours 30 minutes of usable overlap.
- Booking travel or deliveries: tracking Tehran local time against Portugal keeps pickup windows and arrival estimates honest across the +2h 30m offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM WEST" is unambiguous; "3 PM" across a +2h 30m gap is not.
- Block 9:00 AM–2:30 PM WEST as the recurring meeting window if you work primarily from Portugal and need Tehran colleagues present.
- Portugal: Clocks fall back on Sun, Oct 25, 2026. Re-check this page after that date because the offset changes and so does the +2h 30m gap.
About WET (Western European Time)
Western European Time (WET) is used in Portugal, the Canary Islands (Spain), Morocco, and several other locations. It is equivalent to GMT/UTC. During summer, Portugal and the Canary Islands switch to WEST (Western European Summer Time, UTC+01:00).
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 Portugal and Tehran
Both Portugal and Tehran sit inside the 9 AM – 5 PM working day between 9:00 AM–2:30 PM WEST, which is 11:30 AM–5:00 PM IRST. That gives roughly 5 hours and 30 minutes of shared time — the safest window for a live call or meeting.
Business hours overlap
Portugal and Tehran share 5 hours of working-hours overlap (9:00 AM–2:30 PM WEST), so scheduling a live meeting is straightforward.
Portugal is 2 hours 30 minutes ahead of Tehran (WEST UTC+01:00 → IRST UTC+03:30). The shared working window is 9:00 AM–2:30 PM WEST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Portugal
☀ Currently in DST
Standard: UTC+00:00 · DST: UTC+01:00
Clocks fall back on Sun, Oct 25, 2026
Tehran
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 Portugal and Tehran?
Portugal (WEST, UTC+01:00) is 2 hours 30 minutes ahead of Tehran (IRST, UTC+03:30). The gap is currently +2h 30m.
How do I convert Portugal time to Tehran time?
Add +2h 30m to Portugal local time. For example, 9:00 AM in Portugal is 11:30 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 +2h 30m offset from Portugal.
What is the best time to call Tehran from Portugal?
Call between 9:00 AM and 2:30 PM WEST — that maps to 11:30 AM–5:00 PM IRST and keeps both parties inside the working day.
Which is ahead, Portugal or Tehran?
Portugal is 2 hours 30 minutes ahead of Tehran. When it is 12:00 PM in Portugal it is 2:30 PM in Tehran.
Do Portugal and Tehran use different time zones?
Portugal (Portugal) uses WEST at UTC+01:00, while Tehran (Iran) uses IRST at UTC+03:30. The IANA identifiers are Europe/Lisbon and Asia/Tehran.
Does daylight saving time affect the Portugal–Tehran difference?
Yes at the moment: Portugal is on daylight saving time and Tehran is not, so the +2h 30m gap shifts by an hour when exactly one of them changes clocks.
Which other cities share Portugal's time zone?
WEST also covers Lisbon, Porto, Casablanca, Las Palmas, Funchal, Rabat.
Which countries use WEST, Portugal's zone?
WEST is used in Portugal, Spain (Canary Islands), Morocco, Western Sahara.
Is there a day difference between Portugal and Tehran?
Not normally. The +2h 30m gap only pushes the date over for late-evening times.
What is the time difference between Portugal and Tehran?
Tehran is +2h 30m from Portugal.
What timezone is Portugal in?
Portugal 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 WET (Western European Time)?
WET is used in Portugal, Spain (Canary Islands), Morocco, Western Sahara.
Does WET observe daylight saving time?
Yes, WET switches to WEST during summer months.
What are some interesting facts about WET?
Portugal is the only mainland European country in the WET time zone. The Canary Islands are on WET despite being part of Spain (which uses CET).
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 Portugal, what time is it in Tehran?
When it is 12:00 AM (midnight) in Portugal (WET), it is +2h 30m later in Tehran (IRST).
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