Persian Calendar Converter (Solar Hijri)
Leave the field empty for today’s date in the Persian calendar, or 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.
Source: ECMA-402 – Intl.DateTimeFormat (Kalender-Erweiterung -u-ca-). Updated: .
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).
How to convert a Persian date
- Choose the direction: Gregorian → Persian or the other way round.
- Enter the date – or the Persian year (AP), month and day.
- Read the Persian date, the leap year note and the Nowruz date.
Example: 28 September 2026 is 6 Mehr 1405. The year 1406 begins with Nowruz on 21 March 2027.
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).
Persian months in 1405 AP (2026/27)
| No. | Month (Iran) | Afghanistan | Days | Day 1 in 1405 AP |
|---|---|---|---|---|
| 1 | Farvardin | Hamal | 31 | 21 Mar 2026 |
| 2 | Ordibehesht | Sawr | 31 | 21 Apr 2026 |
| 3 | Khordad | Jawza | 31 | 22 May 2026 |
| 4 | Tir | Saratan | 31 | 22 Jun 2026 |
| 5 | Mordad | Asad | 31 | 23 Jul 2026 |
| 6 | Shahrivar | Sonbola | 31 | 23 Aug 2026 |
| 7 | Mehr | Mizan | 30 | 23 Sep 2026 |
| 8 | Aban | Aqrab | 30 | 23 Oct 2026 |
| 9 | Azar | Qaws | 30 | 22 Nov 2026 |
| 10 | Dey | Jadi | 30 | 22 Dec 2026 |
| 11 | Bahman | Dalw | 30 | 21 Jan 2027 |
| 12 | Esfand | Hut | 29/30 | 20 Feb 2027 |
Afghanistan uses the same calendar with zodiac-based month names (overview). In other years the start dates can shift by a day, so use the converter for exact dates.
Persian year to Gregorian year
From Nowruz to 31 December, add 621: 1405 AP + 621 = 2026. From 1 January until the day before Nowruz, add 622: 11 Dey 1405 is 1 January 2027. In reverse, subtract 621 or 622.
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.
Nowruz 1405 to 1407: date and time of the equinox
Nowruz is fixed by the moment of the March equinox (in Persian tahvil). If it falls before noon Tehran time, that day is 1 Farvardin; if it falls after noon, the following day is (Nowruz rule). Iran uses UTC+3:30 all year, without daylight saving time since 2022. Equinox times in UT from the equinox table, rounded to the minute:
| Year (AP) | March equinox (UT) | Tehran time | Nowruz (1 Farvardin) |
|---|---|---|---|
| 1405 | 20 Mar 2026, 14:46 | 20 Mar, 18:16 | Saturday, 21 March 2026 |
| 1406 | 20 Mar 2027, 20:25 | 20 Mar, 23:55 | Sunday, 21 March 2027 |
| 1407 | 20 Mar 2028, 02:17 | 20 Mar, 05:47 | Monday, 20 March 2028 |
So the year 1406 begins with the equinox late on the evening of 20 March 2027 Tehran time, and Nowruz is celebrated on 21 March. In 1407 the equinox comes before noon, so Nowruz falls on 20 March 2028. The minute-exact official time is published each year by the Calendar Center of the University of Tehran; it can differ from the rounded values by a minute.
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.
More calendars: the Hijri calendar converter, the Chinese calendar converter and the Hebrew date converter.
Frequently asked questions
What year is it in Iran (Persian calendar)?
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.
When is Nowruz 1406 (2027), and at what time?
Nowruz 1406 is Sunday, 21 March 2027. The March equinox that starts the year falls on 20 March 2027 at about 20:25 UT, which is 23:55 in Tehran (UTC+3:30). Because that is after noon, 1 Farvardin is the following day.
Is a Shamsi calendar converter the same as a Persian calendar converter?
Yes. Shamsi (“solar”), Jalali, Solar Hijri and Iranian calendar are names for the same calendar, so this converter works for all of them, in both directions.
How do I convert a birth date to the Persian calendar?
Choose “Gregorian → Persian” and enter the birth date. For example, 1 January 2000 is 11 Dey 1378.
How do I convert a Persian year to a Gregorian year?
Add 621 for dates from Nowruz (about 21 March) to 31 December, and 622 for dates from 1 January to Nowruz. 1405 AP runs from 21 March 2026 to 20 March 2027.
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
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