Yep we are trying to solve the values of ABC and DEF. It is not a geocaching puzzle and if there is one like this well it is a pure fluke :) . Many thanks.
Ooh look! A fluke!
http://www.geocaching...11b-abdb-9ac539dff251
Sorry,I don't know the answer but since it talks about plus and minus days, I suspect the title of the puzzle may be relevant.
Funny how you found the geocache on 16/12/12. Not sure why you continue to deny knowledge of Geocaching and delete posts on this forum when people sus you out. Why can't you just admit that you are coming on here to get the answers to geocache puzzles?