I wrote a service that by entering the Persian date, you can find out if that day is an official holiday or not (Official+Friday)

And soon, the possibility of entering other years, the ability to search for a period of time, and activating a programming interface for use in other services (JSON API) will be available.

Update:

• Fixed the problem of entering Persian and Arabic numbers (thanks to @arashmil)


• Displaying errors for incorrect day numbers.


• Discontinued.