The temple priests perform the puja (rituals) during festivals and on a daily basis. The temple rituals are performed six times a day; Kalasanthi at 6:00 a.m., Irandam Kalm at 9:00 a.m., Uchikalam at 12:00 a.m., Sayarakshai at 6:00 p.m, Irandam Kalm at 7:30 p.m., and Arthajamam at 9:00 p.m.. Each ritual comprises four steps: abhisheka (sacred bath), alangaram (decoration), naivethanam (food offering) and deepa aradanai (waving of lamps) for Apatsahayesvarar and Elavarkuzhali.
There are weekly rituals like somavaram (Monday) and sukravaram (Friday), fortnightly rituals like pradosham, and monthly festivals like amavasai (new moon day), kiruthigai, pournami (full moon day) and sathurthi.
Other festivals include Vinayaka Chaturthi, Aadi Pooram, Navaratri, Aippasi Pournami, Skanda Sashti, Kartikai Deepam, Arudra Darisanam, Thaipusam, Maasi Magam, Panguni Uththiram and Vaikasi Visakam. The major festival of the temple is the Brahmotsavam celebrated during the Tamil month of Chittirai (April–June), when special worship practises are followed and the festival image of the deity is taken around the streets of Alangudi.
Image of the temple car
The Northern temple tower
Front mandapa
The temple is counted as one of the Navagraha Temples for planet Guru (Jupiter).Tirugnana Sambandar, a 7th-century Tamil Saivite poet, venerated Apathsaheswarar in ten verses in Tevaram, compiled as the First Tirumurai. Appar, a contemporary of Sambandar, also venerated Annamalaiyar in 10 verses in Tevaram, compiled as the Fifth Tirumurai. As the temple is revered in Tevaram, it is classified as Paadal Petra Sthalam, one of the 275 temples that find mention in the Saiva canon. The temple is one of the most visited temples in the district.
According to a Hindu legend, Mahalingaswamy at Thiruvidaimarudur is the centre of all Shiva temples in the region and the Saptha Vigraha moorthis (seven prime consorts in all Shiva temples) are located at seven cardinal points around the temple, located in various parts of the state.
The seven deities are Nataraja in Chidambaram Nataraja Temple at Chidambaram, Chandikeswarar temple at Tirucheingalur, Vinayagar in Vellai Vinayagar Temple at Thiruvalanchuzhi, Muruga in Swamimalai Murugan Temple at Swamimalai, Bhairava in Sattainathar Temple at Sirkali, Navagraha in Sooriyanar Temple at Suryanar Kovil and Dakshinamoorthy in Apatsahayesvarar Temple at Alangudi, Tiruvarur.