Yaldā Night or Chelle Night is an ancient festival in numerous countries like Iran, Afghanistan, Azerbaijan, Tajikistan, Iraqi Kurdistan, Uzbekistan, and 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 between the last day of the ninth month (Azar) and the first day of the tenth month (Dey) of the Iranian solar calendar. The longest and darkest night of the year is a time when friends and family gather together to eat, drink, and read poetry (especially Hafez) and Shahnameh until well after midnight. Fruits and nuts are eaten and pomegranates and watermelons are particularly significant. The red color in these fruits symbolizes the crimson hues of dawn and the glow of life (More explanations are available in https://en.wikipedia.org/wiki/Yald%C4%81_Night)