How does makara jyothi appear in sabarimala at the same date every year?

Makara Jyothi in fact is a clandestinely made artificial fire (created by burning a large quantity of camphor cubes kept in a silver platter)lit by the officials of Kerala Forest Department, Kerala State Electricity Board, the authorities of Sabarimala temple and the Travancore Devaswam Board in connivance with the Police Department of Kerala State and the Government of Kerala.