jalcal: Convert Between Jalaali (Persian or Solar Hijri) and Gregorian Calendar Dates
The Jalaali calendar, also known as the Persian or Solar Hijri calendar, is the official calendar of Iran and Afghanistan. It starts on Nowruz, the spring equinox, and follows an astronomical system for determining leap years. Each year consists of 365 or 366 days, divided into 12 months. This package provides functions for converting dates between the Jalaali and Gregorian calendars. The conversion calculations are based on the work of Kazimierz M. Borkowski (1996) (<doi:10.1007/BF00055188>), who used an analytical model of Earth's motion to compute equinoxes from AD 550 to 3800 and determine leap years based on Tehran time.
| Version: | 0.3.0 |
| Published: | 2025-03-28 |
| DOI: | 10.32614/CRAN.package.jalcal |
| Author: | Abdollah Jalilian 
[aut, cre],
Kazimierz M. Borkowski [ctb] |
| Maintainer: | Abdollah Jalilian <stat4aj at gmail.com> |
| BugReports: | https://github.com/jalilian/jalcal/issues |
| License: | GPL-2 | GPL-3 [expanded from: GPL (≥ 2)] |
| URL: | https://github.com/jalilian/jalcal |
| NeedsCompilation: | no |
| Materials: | README |
| In views: | TimeSeries |
| CRAN checks: | jalcal results |
Documentation:
| Reference manual: | jalcal.pdf |
Downloads:
| Package source: | jalcal_0.3.0.tar.gz |
| Windows binaries: | r-devel: jalcal_0.3.0.zip, r-release: jalcal_0.1.0.zip, r-oldrel: jalcal_0.3.0.zip |
| macOS binaries: | r-devel (arm64): jalcal_0.3.0.tgz, r-release (arm64): jalcal_0.3.0.tgz, r-oldrel (arm64): jalcal_0.3.0.tgz, r-devel (x86_64): jalcal_0.3.0.tgz, r-release (x86_64): jalcal_0.3.0.tgz, r-oldrel (x86_64): jalcal_0.3.0.tgz |
| Old sources: | jalcal archive |
Linking:
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