Oh, and the date could be in American format MM/DD/YYYY instead of DD/MM/YYYY
The date and time *must* be accurate otherwise it all goes pear shaped.
And yeah, it has to point south, not North, Americans forget there is a whole nuther hemisphere out there.
I agree with jjj, my character became way overbuilt trying to work out the bloody goto system.
There is a bit of a discussion on it here too:
http://www.cloudynights.com/ubbarchi.../o/all/fpart/1