So, I always assume about 6-8 hours [for sperm to reach the egg]. If you are talking about natural conception (i.e. not IUI), the sperm has to work its way through the cervical [fluid], and much is stored up in the cervical glands (that is how they can stick around for 3 days or more).
There are only around 200 of the white tigers left in the world. White tigers are an Asian species, found from the frozen tundra of the Soviet Far East, south to the humid jungles of Malaya and Indonesia, and west to the hot, hardwood forests of India. There are five living subspecies; three others are already extinct.
During the last 100 years, merely 12 white tigers have been spotted in the wild in India; giving an approximate proportion of 1 white tiger for every 10,000 normal pigmented (orange) tigers. The white tiger's origin was recorded in India during the start of the HB Mughal period from 1556 to 1605 A.D. The first modern case of a white tiger being captured was in 1915. He was caught by the local maharajah who kept the tiger until its death.