In the <span style='color:blue'>Hindu system of time cycles</span>, the longest cycles last trillions of years, but at the shorter end of the cycle spectrum, we have the four Yugas, which are:
* Krita Yuga (Golden Age): 1,728,000 years = 2,160 x 800
* Treta Yuga (Silver Age): 1,296,000 years = 2,160 x 600
* Dvapara Yuga (Copper/Bronze Age): 864,000 years = 2,160 x 400
* Kali Yuga (Iron Age): 432,000 years = 2,160 x 200 ...
[ Since 2,160 years = 72 x 30 = precession of the equinox through 30 degrees, or 1/12 of a full precession, there may be some connection between the Hindu system of time cycles and precession, but it is not completely clear to me because 200, 400, 600, and 800 are not multiples of 12. I would be happier with the precession idea if, instead of multiples of 100, multiples of 9 x 12 = 108 had been used to get:
* Krita Yuga (Golden Age): 1,866,240 years = 2,160 x 864
* Treta Yuga (Silver Age): 1,399,680 years = 2,160 x 648
* Dvapara Yuga (Copper/Bronze Age): 933,120 years = 2,160 x 432
* Kali Yuga (Iron Age): 466,560 years = 2,160 x 216
However, it may be an acceptable practice in Hindu/Vedic cosmology to approximate 108 by 100. ]
... John Major Jenkins' recent book, Galactic Alignment goes into the Vedic Yuga system in some detail, and he studies the work of Hindu saint, Sri Swami Yukteswar, (born 1855) ... In one of the oldest Vedic writings, attributed to the god-man Manu, the 4 Yugas are said to add up to 24,000 years, but when they are enumerated, they only come to 12,000 years.
* The Satya Yuga (Golden Age) lasts 4,800 years;
* the Treta Yuga (Silver Age) lasts 3,600 years;
* the Dvapara Yuga (Bronze age) lasts 2,400 years, and
* the Kali Yuga (Iron Age) lasts 1,200 years.
Yuketswar ... equates the 12,000 years to a descending half of the 24,000-year cycle, and another 12,000 years to an ascending half. Jenkins' Study of the Yukteswar analysis shows that Yukteswar was talking about the precession cycle, but basing it on a 24,000-year cycle, rather than the (approx) 25,700-year cycle recognised by astronomy.
[ The approximation by 25,700 by 24,000 = 25,920 / 1.08 is within the range mentioned above of approximating 108 by 100. ]
The descent into darkness started when the Summer (June) solstice sun was aligned with Galactic Centre, around 10,800 BC, and
the ascent back to light starts when the Winter (December) solstice sun aligns with Galactic Centre ...[ which is in the year 2012 ]".
* Krita Yuga (Golden Age): 1,728,000 years = 2,160 x 800
* Treta Yuga (Silver Age): 1,296,000 years = 2,160 x 600
* Dvapara Yuga (Copper/Bronze Age): 864,000 years = 2,160 x 400
* Kali Yuga (Iron Age): 432,000 years = 2,160 x 200 ...
[ Since 2,160 years = 72 x 30 = precession of the equinox through 30 degrees, or 1/12 of a full precession, there may be some connection between the Hindu system of time cycles and precession, but it is not completely clear to me because 200, 400, 600, and 800 are not multiples of 12. I would be happier with the precession idea if, instead of multiples of 100, multiples of 9 x 12 = 108 had been used to get:
* Krita Yuga (Golden Age): 1,866,240 years = 2,160 x 864
* Treta Yuga (Silver Age): 1,399,680 years = 2,160 x 648
* Dvapara Yuga (Copper/Bronze Age): 933,120 years = 2,160 x 432
* Kali Yuga (Iron Age): 466,560 years = 2,160 x 216
However, it may be an acceptable practice in Hindu/Vedic cosmology to approximate 108 by 100. ]
... John Major Jenkins' recent book, Galactic Alignment goes into the Vedic Yuga system in some detail, and he studies the work of Hindu saint, Sri Swami Yukteswar, (born 1855) ... In one of the oldest Vedic writings, attributed to the god-man Manu, the 4 Yugas are said to add up to 24,000 years, but when they are enumerated, they only come to 12,000 years.
* The Satya Yuga (Golden Age) lasts 4,800 years;
* the Treta Yuga (Silver Age) lasts 3,600 years;
* the Dvapara Yuga (Bronze age) lasts 2,400 years, and
* the Kali Yuga (Iron Age) lasts 1,200 years.
Yuketswar ... equates the 12,000 years to a descending half of the 24,000-year cycle, and another 12,000 years to an ascending half. Jenkins' Study of the Yukteswar analysis shows that Yukteswar was talking about the precession cycle, but basing it on a 24,000-year cycle, rather than the (approx) 25,700-year cycle recognised by astronomy.
[ The approximation by 25,700 by 24,000 = 25,920 / 1.08 is within the range mentioned above of approximating 108 by 100. ]
The descent into darkness started when the Summer (June) solstice sun was aligned with Galactic Centre, around 10,800 BC, and
the ascent back to light starts when the Winter (December) solstice sun aligns with Galactic Centre ...[ which is in the year 2012 ]".