Dey (Persian: دی, Persian pronunciation: [dei̯][1]) is the tenth month of the Solar Hijri calendar, the official calendar of Iran and Afghanistan.
[1] It has thirty days,[1] beginning in December and ending in January of the Gregorian Calendar.
The associated astrological sign in the tropical zodiac is Capricorn.
[1] The name is derived from Daθušō, "The Creator" (i.e. Ahura Mazda).
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