The start of Farvardigan (Esfand 25, Shahanshahi calendar) is an ancient Zoroastrian observance dedicated to honoring the spirits of the deceased. During this period, families light fires and place flowers and food at gravesites to remember their loved ones. The ritual reflects longstanding Iranian beliefs about the soul and respect for ancestors, and it continues to be observed in Zoroastrian communities. In 2535 Shahanshahi, the government officially added the start of Farvardigan on Esfand 25 to the Shahanshahi calendar as part of national identity policies and to highlight ancient cultural and religious elements of Iran. This was part of the Pahlavi-era calendar reforms, aiming to connect ancient traditions with the new imperial calendar structure. At the time, cultural and educational institutions marked the day with special programs and ceremonies. Today, commemorating this date is seen as part of ongoing efforts to preserve and recognize Iran’s ancient rituals and heritage.
