holidays
Earliest date for Winter solstice's eve (Northern Hemisphere), and its related observances: Yaldā (Iran)
Related Wikipedia articles
Yalda Night
Persian festival
Yaldā Night or Chelle Night is an ancient festival in Iran, Kurdistan, Azerbaijan, Uzbekistan, Afghanistan, Tajikistan, Turkmenistan that is celebrated on the winter solstice. This corresponds to the night of December 20/21 (±1) in the Gregorian calendar, and to the night…Source: Wikipedia (CC BY-SA)
Iran
Country in West Asia
Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the northeast, Afghanistan to the east, Pakistan…Source: Wikipedia (CC BY-SA)