Fix gathering node bug
Fix gathering node bug

Subtracting 24 hours to find currently open nodes will only work
half of the time for the 12 hour nodes from 3.0.  Fix this
by generalizing the nextTime function to take a minutes offset.

quisquous/cactbot,sqt/cactbot,quisquous/cactbot,quisquous/cactbot,sqt/cactbot,sqt/cactbot,sqt/cactbot,quisquous/cactbot,sqt/cactbot,quisquous/cactbot,quisquous/cactbot