Bhishma said The wheel of time revolves with various divisions such as Kalas, Kashthas, Muhurtas, days, fortnights months, stars, planets, seasons and years.
भीष्म उवाच कलाः काष्ठाश्च युज्यन्ते मुहूर्ताश्च दिनानि च। अर्धमासाश्च मासाश्च नक्षत्राणि ग्रहास्तथा॥ ऋतक्श्चापि युज्यन्ते तथा संवत्सरा अपि।