Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 6
Sanskrit:
द्वादश्यां सवितातिष्ठन्मध्यन्दिनगतो नृप ।विजयानाम सा प्रोक्ता यस्यां जन्म विदुर्हरे: ॥ ६ ॥
ITRANS:
dvādaśyāṁ savitātiṣṭhanmadhyandina-gato nṛpavijayā-nāma sā proktāyasyāṁ janma vidur hareḥ
Translation:
O King, when the Lord appeared — on dvādaśī, the twelfth day of the moon — the sun was at the meridian, as every learned scholar knows. This dvādaśī is called Vijayā.