Maha Shivratri: Night of Shiva
महाशिवरात्रि
Quick Answer
Maha Shivratri, the Great Night of Shiva, is celebrated on the 14th day of the dark fortnight of Phalguna. Devotees observe an all-night vigil, fast, chant Om Namah Shivaya, and perform abhishekam of the Shiva Linga with milk, water, honey, and bael leaves.