Because both calendars track the solar year, they do not drift apart like the lunar Hijri calendar does. However, because they started at different points in history (epochs), there is a fixed age gap. The Gregorian calendar started in .
نیاز به این تبدیل در موارد زیر بسیار رایج است:
The Tarikh Shamsi is an essential part of Iranian and Afghan culture and history. It is used to:
12 months. The first six months (Farvardin to Shahrivar) have 31 days. The next five months (Mehr to Bahman) have 30 days. The final month (Esfand) has 29 days in a regular year and 30 days in a leap year.
| Feature | Tarikh Shamsi (Solar Hijri) | Tarikh Miladi (Gregorian) | | :--- | :--- | :--- | | | Solar (Earth around Sun) | Solar (with leap year rules) | | Year 1 | Hegira (622 CE) | Birth of Jesus (1 CE) | | Start Month | Farvardin (March 20/21) | January 1 | | Used In | Iran, Afghanistan | Most countries worldwide | | Conversion Formula | Miladi = Shamsi + 621/622 | Shamsi = Miladi - 621/622 | tarikh shamsi b miladi
: A popular site that provides a clear interface for converting both ways between Persian and Gregorian calendars.
No need for manual math – this library handles leap years and equinox accurately.
Note: These dates can shift by one day depending on whether it is a leap year in either the Gregorian or Solar Hijri system. 4. Step-by-Step Conversion Example
(تاریخ میلادی) refers to the Gregorian Calendar , named after Pope Gregory XIII, who introduced it in October 1582. It is a solar calendar based on the Earth's revolution around the Sun. Because both calendars track the solar year, they
If the Shamsi date falls between January 1 and the start of the Persian New Year (around March 20/21).
This is the official calendar of Iran and Afghanistan. It is a solar calendar based on the Earth's orbit around the sun. The year begins at the exact moment of the vernal equinox (Nowruz), typically occurring between March 19 and March 21.
It uses a fixed mathematical rule for leap years (every year divisible by 4, except for century years not divisible by 400). It drifts by one day approximately every 3,226 years. 3. Key Structural Differences Between Shamsi and Miladi
Converting is not a simple subtraction. Because the two calendars have different leap years and different year starts, you cannot simply add or subtract a constant number. The next five months (Mehr to Bahman) have 30 days
But easier: Use online tools or the table below.
| Shamsi month | Start date (Miladi) | Year offset | |--------------|----------------------|--------------| | Farvardin | March 20/21 | +621 | | Ordibehesht | April 21 | +621 | | Khordad | May 22 | +621 | | Tir | June 22 | +621 | | Mordad | July 23 | +621 | | Shahrivar | August 23 | +621 | | Mehr | September 23 | +621 | | Aban | October 23 | +621 | | Azar | November 22 | +621 | | Dey | December 22 | +622 | | Bahman | January 21 | +622 | | Esfand | February 20 | +622 |
The fundamental difference in the year count stems from the starting point: