If you build software for 85+ million Persian speakers, you need Jalali (Solar Hijri) dates. And if you do it in PHP, you've probably met the usual suspects: libraries built a decade ago, strftime() calls that PHP 8.1 deprecated, mutable date objects that cause spooky action-at-a-distance in queue workers, and holiday lists you have to maintain by hand. I built ParsiDate to fix that for my own projects. It's now at v1.1.0, MIT licensed, with 136 passing tests: composer require mah...