Kāla-vibhāga: The Divisions of Time from Atom to Brahmā, and the Lord Beyond Time
सन्ध्यासन्ध्यांशयोरन्तर्य: काल: शतसंख्ययो: । तमेवाहुर्युगं तज्ज्ञा यत्र धर्मो विधीयते ॥ २० ॥
sandhyā-sandhyāṁśayor antar yaḥ kālaḥ śata-saṅkhyayoḥ tam evāhur yugaṁ taj-jñā yatra dharmo vidhīyate
Những thời kỳ chuyển tiếp trước và sau mỗi yuga, dài vài trăm năm như đã nói, được các nhà thiên văn học gọi là yuga-sandhyā. Trong các thời kỳ ấy, mọi loại hành trì dharma được thực hiện.
In Canto 3, Chapter 11, this verse explains that the interval between sandhyā and its fractional portion (sandhyā-aṁśa) is counted in hundreds of units, and learned authorities designate such measured spans as part of yuga-based time reckoning.
The verse defines yuga not only as a time-measure but as an age in which dharma is arranged and manifested in a particular way—implying that moral and spiritual order is understood in relation to cosmic time cycles.
It encourages aligning one’s daily discipline (dharma) with regular “junctions” and rhythms—using transitions (like dawn/dusk) for prayer, reflection, and recommitment to spiritual practice.