Developers building global software must handle date conversions correctly. Incorrect Shamsi-to-Gregorian logic causes bugs in scheduling, analytics, and user interfaces.
Note: Dates in Azar, Dey, Bahman, and Esfand of 1403 SH fall in late 2024 and early 2025 CE. The Gregorian year increments in January, so SH year 1403 corresponds to both 2024 and 2025 CE depending on the month. tarikh shamsi b miladi
"Spring vibes and new beginnings. Today: (April 22, 2026). Wishing everyone a productive week ahead! 📅🌿 #ShamsiDate #Iran" Conversion Tip: The Gregorian year increments in January, so SH
The calendar is also significant because it is based on the solar year, which is the most accurate way to measure time. The solar year is the time it takes the Earth to orbit the Sun, which is approximately 365.24 days. Wishing everyone a productive week ahead
Birth certificates, passports, and contracts in Iran use Shamsi dates. International courts or visa applications require Miladi conversion. An off-by-one error can invalidate a document.
| Solar Hijri Date | Gregorian Date | |----------------|----------------| | 1 Farvardin 1401 | March 21, 2022 | | 22 Bahman 1357 | February 11, 1979 (Islamic Revolution) | | 30 Esfand 1399 | March 20, 2021 | | 1 Mehr 1403 | September 22, 2024 |
There is no single simple equation due to the varying leap years, but here is the logical approach used by programmers and astronomers.