Wikipedia
Thiruthevanartthogai or Madhava Perumal Temple is a Hindu temple dedicated to Vishnu located in Thirunangur, a village in the outskirts of Sirkazhi in the South Indian state of Tamil Nadu. Constructed in the Dravidian style of architecture, the temple is glorified in the Divya Prabandha, the early medieval Tamil canon of the Azhwar saints from the 6th–9th centuries AD. It is one of the 108 Divyadesam dedicated to Vishnu, who is worshipped as Madhavaperumal and his consort Lakshmi as Kadalmagal.
It is one among the eleven divyadesams of Thirunangur Tirupathis and is closely associated with Thirumangai Alvar. The temple is open from 8 a.m. to 10 a.m. and 5 p.m. to 7 p.m and has four daily rituals at various times of the day. The Thirumangai Azhwar Mangalasasana Utsavam celebrated annually during the Tamil month of Thai is the major festival of the temple during which the festival images of the eleven Thirunangur Tirupathis are brought on mount designed like Garuda, called Garuda Vahana, to Thirunangur. The temple follows thenkalai mode of worship.