Persian Calendar Converter (Solar Hijri)
Enter a date – the converter shows the date in the Persian solar calendar (Iran, Afghanistan), whether the year is a leap year and when Nowruz, the Persian New Year, falls. In reverse, it finds the Gregorian day for any Persian date.
How it is calculated
How the Persian calendar works
The Persian calendar (Solar Hijri or Jalali, years marked “AP”) is the official calendar of Iran and Afghanistan. Unlike the Islamic lunar calendar it is a solar calendar: the year begins with the spring equinox and stays fixed to the seasons. Like the Islamic calendar it counts from the Hijra in 622 – but in solar years, which is why the year number is smaller (2026 → 1404/1405).
The months
The first six months (Farvardin, Ordibehesht, Khordad, Tir, Mordad, Shahrivar) have 31 days each, the next five (Mehr, Aban, Azar, Dey, Bahman) 30 days each, and Esfand has 29 days – 30 in a leap year. The month names in the converter come from the Unicode calendar data (CLDR).
Nowruz – the Persian New Year
Nowruz (“new day”) is 1 Farvardin. The year 1405 begins on 21 March 2026, the year 1406 on 21 March 2027. Nowruz is celebrated in Iran, Afghanistan, Central Asia, by Kurds and in the Persian-speaking diaspora – traditionally the festival lasts 13 days.
How does the tool calculate?
The conversion uses the Persian calendar built into every browser under ECMA-402 from Unicode CLDR/ICU (persian). For the reverse direction, the converter searches for the day whose Persian date matches exactly. It covers the years 1900 to 2100 (1278–1479 AP). The Islamic lunar calendar is handled by the Hijri date converter.
Frequently asked questions
What Persian year is it?
Since Nowruz on 21 March 2026 it is the year 1405. 27 September 2026 is 5 Mehr 1405. The year 1406 begins on 21 March 2027.
When is Nowruz?
On 1 Farvardin, usually 20 or 21 March – the day of the spring equinox. In both 2026 and 2027 it falls on 21 March.
Is the Persian calendar the same as the Islamic one?
No. Both count from 622, but the Persian calendar is a solar calendar with fixed seasons, while the Islamic calendar is a lunar calendar with 354 or 355 days.
How long are the Persian months?
Months 1–6 have 31 days, months 7–11 have 30 days, and Esfand has 29 days, or 30 in a leap year. That makes 365 or 366 days in total.
Sources and legal basis
- ECMA-402 – Intl.DateTimeFormat (Kalender-Erweiterung -u-ca-)
- Unicode CLDR, UTS #35 Part 4: Dates – Calendar Elements
- ICU User Guide – Calendar Classes
- Institute of Geophysics, University of Tehran – Calendar Center
As of:
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