Live offset · Year-round DST · Shareable URL

Time difference
Helsinki and Tehran

Live clocks (EET ↔ IRST), the current gap, month-by-month offset changes, and a full 24-hour map from Helsinki to Tehran.

1

Live gap

See the current offset between Helsinki and Tehran, with IANA-backed clocks updating every second.

2

Year-round chart

DST can shift the gap by an hour twice a year—the 2026 month table shows every change.

3

Hour-by-hour

Scroll the 24-hour table to map any civil hour in Helsinki into Tehran with day-shift cues.

Time difference workspace

How Helsinki and Tehran line up today.

2 cities · live offsetGap shifts yearly
City pair

Helsinki Tehran

Tehran is 0.5h ahead of Helsinki at this moment. Compare live clocks, seasonal DST shifts, and hour-by-hour conversions below.

Live offsetIANA zones · updates automatically
Helsinki
Europe/Helsinki
ZoneEET / EEST
Offset nowUTC+3
Hour gap
+0:30

TehranHelsinki

Tehran
Asia/Tehran
ZoneIRST
Offset nowUTC+3:30
About this pairUseful when planning calls or docs

Time difference between Helsinki and Tehran: Tehran is currently 1.5 hours ahead of Helsinki.

This difference is not constant: in winter Helsinki is 1.5 hours behind Tehran, while in summer (when one or both observe DST) the gap shifts to 0.5 hours behind. The monthly table below shows the exact offset gap month by month. For practical scheduling, jump to the best-time-to-meet page or the 24-hour conversion table below.

Jump aheadPick the view you need next
Best time to meetMonthly offsets24-hour table
Live clocks workspace

Clocks side by side.

Updates every second
Right nowEurope/Helsinki · Asia/Tehran
Helsinki
Europe/Helsinki
Live time
--:--
OffsetUTC+3
AbbreviationEET / EEST
Observes DST
Tehran
Asia/Tehran
Live time
--:--
OffsetUTC+3:30
AbbreviationIRST
No DST
Relationship

Tehran is 0.5h ahead of Helsinki.

DST rules can widen or shrink this gap for a few weeks each spring and autumn—the month table below shows how many hours Tehran sits ahead of or behind Helsinki through the calendar year.

Next stepsPlan overlap or convert zones
Best time to meet →EET → IRST →Overlap Finder →
Year-round

Offset changes by month

Sampled mid-month for 2026. Compares Tehran versus Helsinki; a value of +3h means Tehran is three hours ahead of Helsinki.

2026 calendar

Month-by-month gap

MonthDifference (Tehran vs Helsinki)
January+1.5h
February+1.5h
March+1.5h
April+0.5h
May+0.5h
June+0.5h
July+0.5h
August+0.5h
September+0.5h
October+0.5h
November+1.5h
December+1.5h
Hour by hour

24-hour conversion table

Every civil hour in Helsinki mapped into Tehran; day-shift cues follow active DST for both zones today.

HelsinkiTehran

Hourly wall-clock map for today — midnight crossings show as day shifts.

Helsinki with part-of-day icon
Tehran arrow and converted time
Day
  • 00:00
    00:30
    Same day
  • 01:00
    01:30
    Same day
  • 02:00
    02:30
    Same day
  • 03:00
    03:30
    Same day
  • 04:00
    04:30
    Same day
  • 05:00
    05:30
    Same day
  • 06:00
    06:30
    Same day
  • 07:00
    07:30
    Same day
  • 08:00
    08:30
    Same day
  • 09:00
    09:30
    Same day
  • 10:00
    10:30
    Same day
  • 11:00
    11:30
    Same day
  • 12:00
    12:30
    Same day
  • 13:00
    13:30
    Same day
  • 14:00
    14:30
    Same day
  • 15:00
    15:30
    Same day
  • 16:00
    16:30
    Same day
  • 17:00
    17:30
    Same day
  • 18:00
    18:30
    Same day
  • 19:00
    19:30
    Same day
  • 20:00
    20:30
    Same day
  • 21:00
    21:30
    Same day
  • 22:00
    22:30
    Same day
  • 23:00
    23:30
    Same day
Uses your browser's IANA zone data — choose another date in the converter for historical or future days.
Keep exploring

Related pages

More time-difference routes, pairwise best times, triple-city overlaps, and conversions tied to Helsinki, Tehran, or this corridor.

FAQ

Frequently asked questions

Offsets between Helsinki and Tehran, DST shifts, scheduling, and how we source timezone data—plus how to share this page.

Currently, Tehran is 0.5h ahead of Helsinki. This may change through the year if either city observes Daylight Saving Time.