सूर्यरथ-कालचक्र-आयनविभागः, संध्योपासनम्, देवयान-पितृयानम्, विष्णुपद-गङ्गावतरणम्
तदा तुल्यम् अहोरात्रं करोति तिमिरापहः दशपञ्चमुहूर्तं वै तद् एतद् उभयं स्मृतम्
tadā tulyam ahorātraṃ karoti timirāpahaḥ daśapañcamuhūrtaṃ vai tad etad ubhayaṃ smṛtam
Then the dispeller of darkness, the Sun, makes day and night equal; and that span—fifteen muhūrtas—is remembered as belonging to both, alike.
Sage Parāśara (teaching Maitreya)
Speaker: Parasara
Topic: Equinox definition: equality of day and night and its measurement in muhūrtas.
Teaching: Cosmological
Quality: precise
Concept: At the equinox the Sun equalizes day and night, each being reckoned as fifteen muhūrtas in that balanced span.
Vedantic Theme: Dharma
Application: Use moments of ‘balance’ (daily/seasonal) for self-audit: equalize outward action and inward contemplation.
Vishishtadvaita: Balance in the cosmos mirrors the harmonious order of the Lord’s administration, encouraging integrated life (pravṛtti and nivṛtti) within a real world.
It marks a precise cosmic balance where the Sun regulates time so that day and night are of equal measure, reflecting universal order (ṛta) within Vishnu’s governed cosmos.
He defines the equalized span of day and night as fifteen muhūrtas, treating it as a shared measure counted as belonging to both halves of the day-night cycle.
Even when the verse names the Sun as the immediate regulator, the Purana’s framework presents such cosmic regularity as operating under Vishnu’s supreme sovereignty, with time (kāla) functioning as His ordered power.