City-based Shirdi Sai Anugraha Peetham will celebrate Mahasivaratri in the open ground behind Sri Seshasai Kalayana Mandapam on Bandar Road, at 5.30 p.m. on Monday. The celebrations will mark ekadasi rudra maha homam and ekadasi rudrabhishekam to a 11-ft high maha Siva lingam.