Manusmriti

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दैवे रात्र्यहनी वर्षं प्रविभागस्तयोः पुनः । अहस्तत्रोदगयनं रात्रिः स्याद् दक्षिणायनम् ॥ ६७ ॥

sanskrit

A year is a day and a night of the gods; their division is (as follows): the half year during which the sun progresses to the north will be the day, that during which it goes southwards the night.

english translation

daive rAtryahanI varSaM pravibhAgastayoH punaH | ahastatrodagayanaM rAtriH syAd dakSiNAyanam || 67 ||

hk transliteration by Sanscript