Amāvasyā-Pitṛtarpaṇa: Purūravas and the Soma-Based Ancestral Offering (अमावस्या-पितृतर्पण / सोमतर्पण-विधि)
सायाह्ने ऽह्यनुमत्यादौ कालो द्विलव उच्यते / लवौ द्वावेव राकायां कालो ज्ञेयो ऽपराह्णकः
sāyāhne 'hyanumatyādau kālo dvilava ucyate / lavau dvāveva rākāyāṃ kālo jñeyo 'parāhṇakaḥ
At evening, at the beginning of Anumatī and the like, the time is said to be two lava. And on Rākā (the full moon), those two lava are to be known as the aparāhṇa time.