" The Hindu scriptures place the present world-age as occurring within the Kali Yuga of a much longer universal cycle than the simple 24,000-year equinoctial cycle with which Sri Yukteswar was concerned. The universal cycle of the scriptures is 4,300,560,000 years in extent, and measures out a Day of Creation. This vast figure is based on the relationship between the length of the solar year and a multiple of pi (3.1416, the ratio of the circumference to the diameter of a circle). The life span for a whole universe, according to the ancient seers, is 314,159,000,000,000 solar years, or “One Age of Brahma.” The Hindu scriptures declare that an earth such as ours is dissolved for one of two reasons: the inhabitants as a whole become either completely good or completely evil. The world mind thus generates a power that releases the captive atoms held together as an earth. Dire pronouncements are occasionally published regarding an imminent “end of the world.” Planetary cycles, however, proceed according to an orderly divine plan. No earthly dissolution is in sight; many ascending and descending equinoctial cycles are yet in store for our planet in its present form. 6 "
― Paramahansa Yogananda , Autobiography of a Yogi