Ādi-līlā, Chapter 3
169
TEXT 7
সত্য, ত্রেতা, গণর, কলি, চারিযুগ জামি ।
সেই চারিযুগে দিব্য একযুগ মামি ॥ ৭ ॥
satya, tretā, dvāpara, kali, cāri-yuga jāni sei cāri-yuge divya eka-yuga māni
SYNONYMS
satya —Satya;  tretā —Tretā;  dvāpara —Dvāpara;  kali —Kali;  cāri-yuga —four ages;  jāni —we know;  sei —these;  cāri-yuge —in the four ages;  divya —divine;  eka-yuga —one age;  māni —we consider.
TRANSLATION
We know that there are four ages [yugas], namely Satya, Tretā, Dvāpara and Kali. These four together comprise one divya-yuga.
TEXT 8
একান্তর চতুর্যুগে এক মহুন্তর ।
চৌদ্দ মহুন্তর অন্ধার দিবস ভিতর ॥ ৮ ॥
ekāttara catur-yuge eka manvantara caudda manvantara brahmāra divasa bhitara
SYNONYMS
ekāttara —seventy-one;  catuḥ-yuge —in cycles of four ages;  eka —one;  manu-antara —period of a Manu;  caudda —fourteen;  manu-antara —periods of Manu;  brahmāra —of Lord Brahmā;  divasa —a day;  bhitara —within.
TRANSLATION
Seventy-one divya-yugas constitute one manvantara. There are fourteen manvantaras in one day of Brahmā.
PURPORT
A  manvantara  is the period controlled by one Manu. The reign of fourteen Manus equals the length of one day (twelve hours) in the life of Brahmā, and the night of Brahmā is of the same duration. These calculations are given in the authentic astronomy book known as the  Sūrya-siddhānta . This book was compiled by the great professor of astronomy and mathematics Bimal Prasād Datta, later known as Bhaktisiddhānta Sarasvatī Gosvāmī, who was our merciful spiritual master. He was honored with the title Siddhānta Sarasvatī for writing the  Sūrya-siddhānta , and the title Gosvāmī Mahārāja was added when he accepted  sannyāsa , the renounced order of life.