OpenStreetMap node 10858396106 fixes Thiruparkadal village at 12.8841525, 79.4558982. The former Prasanna temple pin sat roughly 1.7 kilometres north of the actual named object and has been removed.
Three coordinates, all read
Prasanna Venkatesa is node 13165311031; Athi Ranganatha is node 13131309802. The two are about thirteen metres apart. OSRM measures 1.17 and 1.27 kilometres by road from the village node.
Walk only when the road permits
The route follows Thiruparkadal Branch Road, but mapping does not prove a continuous pavement, shade or lighting. No pedestrian-engine measurement is claimed. Use the morning and retain a vehicle if mobility or heat is a concern.
Accuracy changes the visit
With the corrected points, the page no longer sends visitors north or makes two neighbouring sanctums look scattered. Precise mapping is practical care, not decoration.