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.
India houses the largest population of tigers. Official estimates from 2009 indicate 1,200 to 1,500 tigers living on 27 wildlife reserves in that country. During the past 70 years, three tiger subspecies have become extinct, and the South China tiger is practically extinct. There are only 20 to 30 members of that subspecies remaining in the wild.