Parsi Date的作者是WP-Parsi Team,目前有70,000+个有效安装。已经Tested with 5.3.3版本的wordpress。
This package is made by Persian developers to bring so much better experience of Persian WordPress. It includes Shamsi (Jalali) calendar, character issues fixes and Right-To-Left fix for WordPress back-end environment.
List of some features:

Shamsi (Jalali) day-picker in Block Editor (Gutenberg)
Shamsi (Jalali) jQuery UI date-picker Widget
Shamsi (Jalali) date in Posts, comments, pages, archives, search, categories
Shamsi (Jalali) date in Permalinks
Shamsi (Jalali) date in admin sections such as posts lists, comments lists, pages lists
Shamsi (Jalali) date in post quick edit, comment quick edit, page quick edit of admin panel
Shamsi (Jalali) calender widget
Shamsi (Jalali) archive widget
RTL and fixed tinymce editor
Powerful and fast function for fixing Arabic (ي , ك) to Persian (ی , ک)
Powerful and fast function for Persian numbers
Low resources usage