Yalda

Yaldā

... Yalda (Persian یلدا‎), Shab-e Yalda (Persian شب یلدا‎), "Night of Birth", or Zayeshmehr (Persian زایش مهر‎) "Birth of Mithra", or Shab-e Chelleh (Persian ... Yalda is celebrated on the Northern Hemisphere's longest night of the year, that is, on the eve of the Winter Solstice ... Depending on the shift of the calendar, Yalda is celebrated on or around December 20 or 21 each year ...