jalcal

0.3.0

Convert Between Jalaali (Persian or Solar Hijri) and Gregorian Calendar Dates

0packages depend

4.4Kdownloads / year

–test coverage

13/13checks pass

Overview

About

Maintained by Abdollah JalilianFirst published 2021-09-072 releasesCRAN page ↗GitHub ↗

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.

Install

R (CRAN)pak (dev)Ubuntu (r2u)openSUSE (OBS)

install.packages("jalcal", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("jalilian/jalcal")

Development version from jalilian/jalcal. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-jalcal

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-jalcal

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

13OK

Slowest check: 36 s · r-devel-windows-x86_64

Code health

None

Tests · ratio 0.00

not tracked

Coverage

100%

Documentation · exports

Dependencies · direct

Check history

OK2026-03-10
14 OK · 0 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMEYes · 292 wordsVignettesNopkgdown siteNoNEWSNoCode of conductNoContributing guideNo

Examples that run: 100%
Documented parameters: 100%
Return-value docs: 100%
References docs: 33%

Downloads

4.4K

CRAN downloads in the past year

Rank #10,876 · ~12/day · ~365/mo

Releases R versions

Daily download trend is not available in this view yet.

25530 days

95290 days

4.4K1 year

Compare downloads with other packages →

Also on93 r2u11 autocran55 c2d4u

Repository

GitHub ↗ jalilian/jalcal

4Stars

1Forks

0Open issues

0Open PRs

0Releases

59Commits

2Contributors

59 commits · Last activity 2025-04-09

Stars over time

2024-08-25 · 42026-07-07 · 4

Repository practices

Upstream repositoryBeta

3 development-tooling and community-health practices detected across 3 families in the upstream repository

Checks run against github.com/jalilian/jalcal on 2026-07-26.

Continuous integration (1)

GitHub Actions

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

0 external dependencies (excludes base and recommended)

Depends (0)

none

Imports (0)

none

LinkingTo (0)

none

Suggests (0)

none

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

People & History

People (2)

Maintainer (1)

Abdollah Jalilian

Author, Maintainer

Authors (1)

Abdollah Jalilian

Author, Maintainer

Contributors (1)

Kazimierz M. Borkowski

Contributor · added in 0.3.0

Listed in earlier versions (1)

jdf.scr.ir

no longer listed · 0.1.0

Package Timeline

2 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
0.3.0Latest
2025-03-28 · current release · diff ↗
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
0.1.0
2021-09-07
R
R 4.1.0 released · 2021-05-18

Package metadata

First published: 2021-09-07
Total releases: 2 / 5 yrs
License: GPL (>= 2) OSI
Download size: 7.8 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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