Yuga-Vibhāga and Kāla-Pramāṇa
Measures of Time and the Four Yugas
युगसंध्यांशकश्चैव युगसंधानमेव च / षट्प्रकाशयुगाख्यैषा ता प्रवक्ष्यामि तत्त्वतः
yugasaṃdhyāṃśakaścaiva yugasaṃdhānameva ca / ṣaṭprakāśayugākhyaiṣā tā pravakṣyāmi tattvataḥ
I shall also speak of the portions of the yuga’s twilight (sandhyā) and of the yuga’s joining (sandhāna); these six divisions called “ṣaṭ-prakāśa” I will declare in truth.