Zartosht no-diso, or Zarthost no deeso, is an important day of remembrance in the Zoroastrian religion.
In the seasonal calendar, Zarthost No-Diso falls on December 26.
It is an occasion of remembrance with lectures and discussions held on the life and works of the prophet.
There is no mourning in the Zoroastrian religion, only remembrance and worship of the Farohars of the departed.
Nonetheless, in the Shahnama 5.92,[1] he is said to have been murdered at the altar by the Turanians in the storming of Balkh.