In this volume, Ojhaji has written on kaala or time and various dimensions of time. The term, manuvantara, refers to Manu’s lifetime. One kalpa has a thousand yuga and one manavantara has 71 yuga. One divyayuga is equal to divya 12000 years and a human 4320000 years. Two thousand such yuga makes one day-night of Brahma. One thousand years make one day for Brahma and one thousand years make a night for Brahma. One day of Brahma is one kalpa of human.
मन्वन्तरानिर्धार:
यह भारतीय काल विवेचन का एक अद्भुत ग्रन्थ है । इस ग्रन्थ में मन्वन्तर निरूपण के अन्तर्गत युग, दिव्ययुग, नित्यकल्प, सप्तकल्प एवं त्रिंशत्कल्प का निरूपण किया गया है ।
