Those who know the day of Brahma, which lasts a thousand Yugas, and the night, which also lasts a thousand Yugas, know day and night.

Swami Sivananda

Those people who know what day and night are, know the day of Brahma which ends in a thousand yugas, and His night which also ends in a thousand yugas.

Swami Gambirananda

Follows the commentary of Shankara (Advaita).

Those people who know what day and night are, know the day of Brahma which ends in a thousand yugas [The four yugas (in the human worlds), viz Satya, Treta, Dwapara, and Kali are made up of 4,320,000 years. This period multiplied by a thousand constitutes one day of Brahma. His night also extends over a similar period. See M.S. and V.S.A.], and His night which also ends in a thousand yugas.

Swami Adidevananda

Follows the commentary of Ramanuja (Vishishtadvaita).

Those who know the day of Brahma as encompassing one thousand yugas (world-ages), and night [also] as encompassing one thousand yugas—those people know the day and night of Brahma.

Dr. S. Sankaranarayan

Follows the commentary of Abhinavagupta (Kashmir Shaivism).

Those who understand the cosmic day and night know that one day of creation is a thousand cycles, and that the night is of equal length.

Shri Purohit Swami

जो मनुष्य ब्रह्माके एक हज़ार चतुर्युगीवाले एक दिनको और सहस्त्र चतुर्युगीपर्यन्त एक रातको जानते हैं, वे मनुष्य ब्रह्माके दिन और रातको जाननेवाले हैं।

Swami Ramsukhdas

जो लोग ब्रह्मा जी के एक दिन की अवधि जानते हैं जो कि सहस्र वर्ष की है तथा एक सहस्र वर्ष की अवधि की एक रात्रि को जानते हैं वे दिन और रात्रि को जानने वाले पुरुष हैं।

Swami Tejomayananda