https://en.wikipedia.org/wiki/Chaharshanbe_Suri

Chaharshanbeh Suri or Charshanbeh Suri or Chahar shanbe suri (Persian: چهارشنبه‌سوری,romanized: Čâhâršanbe suri;^\1])^\2])^\3])^\4]) lit. 'Scarlet Wednesday'), is an Iranian festival of the fire dance celebrated on the eve of the last Wednesday of the year, of ancient Zoroastrian origin.^\2]) It is the first festivity of Nowruz, the Iranian New Year.^\5])^\6])