SB 8.18.6

dvādaśyāṁ savitātiṣṭhan
 madhyandina-gato nṛpa
vijayā-nāma sā proktā
 yasyāṁ janma vidur hareḥ
Synonyms: 
dvādaśyām — on the twelfth day of the moon; savitā — the sun; atiṣṭhat — was staying; madhyam-dina-gataḥ — on the meridian; nṛpa — O King; vijayā-nāma — by the name Vijayā; — that day; proktā — is called; yasyām — on which; janma — the appearance; viduḥ — they know; hareḥ — of Lord Hari.
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.