I just emailed the site owner, but I forgot to make this correction. I am posting it here for all.
Under the entry
KHORDAD, the meaning of the name is not right. It comes from Avestan "ha-uuartat" which means "health". It is the name of the deity that ensures human health, and the etymology is not very clear. The name probably survived in the original form in the local name of Croats: Hvarati.