When Is Yalda 2024 Calendar. United states 2024 holiday calendar with all major holidays and observances. Every year, on december 21 st, iranians gather together to celebrate one of the traditions of their forefathers:

In the solar hijri calendar. Yalda night is the longest night of the year between the sunset on december 21 st , the last day of autumn until sunrise on december 22 nd (dates may vary), the first day of.