Kaliyug consists of 432000 years (4+3+2) = 9 Your View Please
Satyug - consists of 172,800 years (1+7+2+8 = 18 == (1+8 = 9)
TretaYug consists of 1296000 years (1+2+9+6 = 18 = (1+8 = 9)
DwaparYug consists of 864000 years (8+4+6) = 18 = (1+8 = 9)
Kaliyug consists of 432000 years (4+3+2) = 9 Sri Yantra: On the Sri Yantra there are marmas where three lines intersect, and there are 54 Pentagon: The angle formed by two adjacent lines in a pentagon equals 108 degrees.
Astrology: There are 12 constellations, and 9 arc segments called namshas or chandrakalas. 9 times 12 equals 108. Chandra is moon, and kalas are the divisions within a whole.
Gregorian calendar. This date is also considered by many Hindus to be the day that Krishna died after being mortally wounded by an arrow. Most interpreters of Hindu scriptures believe that earth is currently in Kali Yuga. Some, such as Swami Sri Yukteswar, David Frawley, and Paramhansa Yogananda believe that it is now near the beginning of Dvapara Yuga. The Kali Yuga is traditionally thought to last 432,000 years.
Hindus believe that human civilization degenerates spiritually during the Kali Yuga, which is referred to as the Dark Age ...more
but i think that 9 is not the unauspicious number.