I have come across a couple of challenge caches that require me to identify caches with a specified number of months between my found log and the previous found log. In one version, I need to accumulate a total number of "gap" months. In another version, I need to identify 12 caches - one for 1 month, one for 2 months, up to one for 12 months. They don't have to be in order.
Thanks in advance for any help.