What is Festival of Lights?

Answer 1

The Festival of Lights is another name for Hanukkah.

Hanukkah (Hebrew: חֲנֻכָּה‎, Tiberian: Ḥănukkāh, nowadays usually spelled חנוכה pronounced [χanuˈka] in Modern Hebrew, also romanized as Chanukah), also known as the Festival of Lights, is an eight-day Jewish holiday commemorating the rededication of the Holy Temple (the Second Temple) in Jerusalem at the time of the Maccabean Revolt of the 2nd century BCE, and the miracle of the oil. Hanukkah is observed for eight nights, starting on the 25th day of Kislev according to the Hebrew calendar, which may occur at any time from late November to late December in the Gregorian calendar.

The Seleucids (Syrian-Greeks) under Antiochus Epiphanes, at the instigation of the Hellenizers, had forbidden various Torah-practices, such as Sabbath-observance, and pressed the Jews to offer up idolatrous sacrifices. The Hasmoneans (a family of religious Jews) fought to retake the Holy Temple, which had been seized by the Seleucids, and to enable the people to once again observe the Torah. When they reached the Temple grounds, they found only one day's supply of unsullied olive oil, but the oil lamps miraculously burned for eight days (Talmud, Shabbat 21b), allowing enough time for new oil to be prepared and brought.

The significance of the miracle is that it demonstrated that God's presence still dwelt in the Holy Temple.

The Torah Sages instituted the festival of Hanukkah at that time (Talmud, Shabbat 21b), to publicize the miracle (Rashi commentary, ibid). The eight-day rededication of the Temple is also mentioned in the book of Maccabees (I, 4:36; and II, 1:18); and Josephus mentions the eight-day festival in Antiquities ch.12.

The festival is observed by the kindling of the lights of a special candelabrum, the nine-branched Menorah or Hanukiah, one additional light on each night of the holiday, progressing to eight on the final night. The typical Menorah consists of 9 branches. An extra light called a shamash (Hebrew: שמש, "attendant") is also lit each night for the purpose of lighting the others, and is given a distinct location, usually above or below the rest. The "shamash" symbolically supplies light that may be used.

The Hindu Festival of lights is Deepavali or Diwali.

Buddhism also has a Light Festival.

There are also many local non-religious Festivals of Light, especially during the winter holiday season.

Answer 2

in karthik masa deepavali festival comes in that masa we celebrate the festival of lights