To initially setup the time if there is a big difference you can use the following command

 /usr/sbin/ntpdate -s -b -p 8 -u yourISP.NTP.Server.IP

Debian:

Setting timezone:
sudo dpkg-reconfigure tzdata

/etc/ntp.conf
server 0.bg.pool.ntp.org
server 1.europe.pool.ntp.org
server 2.europe.pool.ntp.org

Great references http://www.akadia.com/services/ntp_synchronize.html

hwclock –systohc

http://dev.mysql.com/tech-resources/articles/storage-engine.html

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Suppose you’re on a game show, and you’re given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what’s behind the doors, opens another door, say No. 3, which has a goat. He then says to you, “Do you want to pick door No. 2?” Is it to your advantage to switch your choice? (Whitaker 1990)

http://en.wikipedia.org/wiki/Monty_Hall_problem

http://www.smartvideos.ru/probabilit-problem

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