Update ds1307 rtc-NTP sync tool

well when i use the code from this tutorial http://arduino.cc/en/Tutorial/UdpNtpClient
it works, but it is not my timezone, and i dont know how to find the ip of a ntp server I can just find the name of the srever, the ip i ping from cmd and find out, however, even when i put the ip from the tutorial http://arduino.cc/en/Tutorial/UdpNtpClient, in the code from Arduino Playground - DS1307OfTheLogshieldByMeansOfNTP it doesnt work. So that means it is not the problem with the server and i can recive udp with no problem.
I was compairing those two codes and could only find a difference taht the one that works uses Udp.parsePacket() insted of Udp.available(). Bet even if i change that it doesnt work
PS: i would use the one that works, but it gives me only time, I need date also and to synhronise it with the timer