The Paripāḍal, which belongs to the Eṭṭuttogai collection, is of unique interest in that it enables us to fix the Saṅgham age accurately, by a careful consideration of its astronomical data. The data are contained in the following opening lines of the 11th Paripāḍal of Nallanduvanār:—

virikadir madiyamoḍu viyal viśumbu puṇarppa

veriśaḍaiyeilvēan talaiyenak kīirundu

teruviḍaippaḍutta mūnṟonpadiṟṟirukkaiyu

ḷurukeu veḷḷivandēṟṟiyal śēra

varuḍaiyaip paḍimagan vāyppap poruḍeri

pundi mitunam porundap pular viḍiya

laṅgiyuyar niṟpa vantaṇan paṅguvi

nillattuṇaikkuppāleyda viṟaiyaman

villiṟkaḍai makaramēvap pāmbollai

madiyamaḍaiya varunāḷil vāynda

podiyin munivan puraivaraikkīṟi

mitunamaḍaiya virikadir vēni

ledirvaravu māriyiyaikena vivvāṟṟäṟ

puraikeu śaiyam poimaaitāa.