What kind of night is it?
A Tamil calendar and the 2027 observances lists put Maha Shivaratri on Saturday 6 March. It is the 13th night of the waning moon in Phalguna. People fast and stay awake, and the lingam is washed. The night is kept in India, Nepal, and in Shaiva houses far from both.
Gita Jayanti was a December reading. The page is the vigil. It is not a ticket.