What is the Shamsi Calendar?
A comprehensive guide to the Solar Hijri calendar used in Afghanistan.
The Basics
The Shamsi calendar (also known as the Solar Hijri calendar) is the official calendar of Afghanistan. Unlike the Gregorian calendar (Miladi) used in most of the world, the Shamsi calendar is a solar calendar that bases its years on the astronomical movement of the Earth around the sun.
It is considered one of the most accurate calendar systems in existence because it is based on solar observations rather than mathematical approximations.
Key Facts
- Epoch: Like the Lunar Hijri calendar, it starts from the year of the Prophet Muhammad's (PBUH) migration from Mecca to Medina (622 AD).
- New Year: The year always begins on Nowruz, the vernal equinox (Spring), which falls on March 20 or 21.
- Accuracy: It is more accurate than the Gregorian calendar because it uses astronomical observations to determine the start of the year.
Month Names & Zodiac Signs
One of the most unique features of the Afghan Shamsi calendar is that its month names are directly derived from the 12 signs of the Zodiac. Each month begins exactly when the sun enters a new constellation.
Shamsi vs. Hijri (Lunar)
In Afghanistan, the Lunar Hijri calendar is used exclusively for religious purposes (like determining Ramadan or Eid). Because the Lunar year is roughly 11 days shorter than the Solar year, religious holidays "drift" through the Shamsi and Miladi seasons over time.
Why Use This Calendar?
For Afghans, the Shamsi calendar is deeply tied to the agricultural cycles of the land. Since the months correspond exactly with the seasons, it remains the most practical way to track the climate and time for farming, government business, and national history.