Agnipurana 219.13

219.13

ṛtavaś ca tathā māsā pakṣā rātryahanī tathā /
sandhyātithimuhūrtācca kālasyāvayavākṛtiḥ //

The seasons, and likewise the months, the fortnights, night and day, / the twilights, lunar days, and muhūrtas, which form the body of Time;