Indian Purana state that the marriage of the Divine couple,Siva and Parvathi took place in Himalayas and as entire humanity and Celestial Beings had gone to Himalayas to attend the wedding, the Earth ЁЯМО tilted down in the South .
To enure the Earth regain its balance, Siva asked Sage Agastya to down to South and he did. Earth regained its balance. As Agastya could not be present for the wedding, Siva gave His marriage Darshan to Him.How this helps in dating the Date of Siva Parvathi Marriage is explained in the audio.