What is the time difference between WET and IRST?

Iran Standard Time (IRST) is 2 hours and 30 minutes ahead of Western European Time (WET). WET uses a UTC offset of UTC+1, while IRST uses UTC+3:30. For example, when it's 9:00 AM in WET, it's 11:30 AM in IRST. Note that this difference may shift by one hour during daylight saving time transitions if WET observes DST. Use the conversion table above to see the exact time for each hour of the day.

How do I convert WET to IRST?

To convert WET to IRST, add 2 hours and 30 minutes to the WET time. For example, 9:00 AM WET is 11:30 AM IRST, and 5:00 PM WET is 7:30 PM IRST. Keep in mind that during daylight saving time transitions, the offset between these timezones may temporarily change by one hour. You can also use the interactive converter above for quick, accurate results.

What time is it in IRST when it's noon in WET?

When it's 12:00 PM (noon) in WET, it's 2:30 PM in IRST. This is because IRST is 2 hours and 30 minutes ahead of WET. Similarly, when it's 6:00 PM in WET, it's 8:30 PM in IRST. During daylight saving time transitions, these times may shift by one hour, so always verify the current offset. The color-coded conversion table above shows every hour mapped between both timezones.

How many hours ahead is IRST from WET?

IRST is 2 hours and 30 minutes ahead of WET. This means when it's 9:00 AM in WET, it's 11:30 AM in IRST, and when it's midnight in WET, it's 2:30 AM in IRST. The exact difference can vary by one hour during daylight saving time transitions. The conversion table above provides a complete hour-by-hour mapping.

Is IRST ahead or behind WET?

IRST is ahead of WET by 2 hours and 30 minutes. Clocks in IRST show a later time than WET, meaning the day starts earlier in IRST relative to WET. For example, when it's morning in WET, it's later in the morning in IRST. This gap may change by one hour during DST transitions.

Does WET observe daylight saving time?

Yes, Western European Time observes daylight saving time. During DST, the abbreviation changes to WEST and clocks move forward by one hour, typically in spring. Clocks then fall back in autumn, returning to standard WET time. This means the UTC offset for WET shifts between two values depending on the season. Check our DST change calendar for exact transition dates that may affect your WET to IRST conversions.

Does IRST observe daylight saving time?

No, Iran Standard Time does not observe daylight saving time. The UTC offset of UTC+3:30 remains the same year-round, which simplifies time conversions. Regions using IRST keep their clocks unchanged regardless of the season.

What is the best time to call from WET to IRST?

The best time for a call between WET and IRST is during overlapping business hours (9 AM – 5 PM) in both timezones. To reach someone in IRST during their work day, call between 6:30 AM and 2:30 PM your WET time. Avoid calling too early or late, as the 2 hours and 30 minutes difference means your evening could be their late night. Check the color-coded conversion table above — green hours indicate business hours in both zones, making it easy to find the ideal time.

When does daylight saving time change in WET?

Daylight saving time transitions vary by year and region. Western European Time observes DST, which typically shifts clocks forward by one hour in spring ("spring forward") and back in fall ("fall back"). During these transition periods, the time difference between WET and IRST may temporarily change by one hour, which can cause confusion for scheduled meetings or calls. It's important to double-check your conversions around transition dates, especially if the two timezones switch on different dates. Check our DST change calendar for exact transition dates in the current year.

Do WET and IRST ever have the same time?

No, WET and IRST never show the same time because their base UTC offsets are different. However, because WET observes daylight saving time and IRST does not, the time difference between them changes by one hour during DST transitions. This means the gap narrows or widens depending on the season, but the two clocks never align. Always verify the current offset around DST transition dates to avoid scheduling errors.

WET to IRST Converter

Convert Western European Time to Iran Standard Time. See the hour-by-hour conversion table below.

Upcoming DST Change

Western European Time (WEST) will fall back on October 25. Clocks will shift by 1 hour (WEST → WET).

View all DST changes

Timezone Details

Western European Time

11:43 AM

Monday, October 19, 2026

WEST (UTC+01:00)

Tehran

2:13 PM

Monday, October 19, 2026

Tehran (UTC+03:30)

Difference: +2h 30m

WEST DST: Yes (WEST)

24-Hour Overview

WEST — 24-hour overview

12a12a

3a3a

6a6a

9a9a

10a

11a

12p12p

3p3p

6p6p

9p9p

10p

11p

NightMorningBusinessEvening

Tehran — 24-hour overview

2a2a

5a5a

8a8a

10a

11a11a

12p

2p2p

5p5p

8p8p

10p

11p11p

12a

NightMorningBusinessEvening

Frequently Asked Questions

Related Conversions

IRST to WET

Cities in These Timezones

WET Cities

Lisbon Porto

IRST Cities

Tehran

More Tools

Compare WET & IRST Plan a Meeting (WET & IRST)See on Map

Learn More

How Time Zones Work Understanding DST Timezone Abbreviations

External Resources

Western European Time on Wikipedia IANA Time Zone Database