The Essence of the Tantra 6.16

6.16

तस्य च तुट्यर्धस्य प्राच्यम् अर्धम् आमावस्यं द्वितीयं प्रातिपदम्

Transliteration (IAST)

tasya ca tuṭyardhasya prācyam ardham āmāvasyaṃ dvitīyaṃ prātipadam

— of that half-tuṭi ; — the prior half ; — pertaining to the new-moon day ; — the second ; — pertaining to the first lunar day (pratipad)

And of that half-tuṭi, the prior half belongs to the new-moon day, the second to the first lunar day.

The Essence of the Tantra6.16