Makara is the name of a zodiac sign in Indian languages known as Capricorn in English. “Jyoti” means “light” in Sanskrit. Thus “Makara Jyoti” (also spelt as Jyothi) means “Light of Capricorn”.The Sun appears to move from onezodiac constellation to another every month and the day on which Sun changes the constellation is called Sankranti (= transit) in Sanskrit. Makara Sankranti is the Sun transit into Capricorn (Makara) constellation that usually occurs on 14 January every year and is a very important Hindu festival celebrated all over India in various forms. Uttara, the six-month period when the sun travels towards the north on the celestial sphere starts on Makara Sankranti and ends on Karka Sankranti (around July 14).
One of the places where a large number of devout Hindus reach on 14 January for worship is Sabarimala located in thick rain forests of Kerala. Makara Jyothi is a star which is worshiped by pilgrims in huge numbers at Sabarimala Temple in Kerala on Makara Sankranti on 14 January every year.However many devout Hindus claim that Makara Jyothi is the celestial lighting which takes place on Makara Sankranthi day and they believe that Lord Ayyappan asserts himself as Makara Jyothi to bless his devotees.