Halfway out of the dark Traditional Cache

You are looking for a small camouflaged Lock n' Lock container with the usual trade goods. There are finder's cards for the first ten finders.

In 2010, the winter solstice occurred on December 21st. On this, the shortest day and longest night of the year, a lunar eclipse occurred that was visible over all of the Americas. From the time of the dark of the eclipsed full moon, the days will get longer, and the nights shorter. We are halfway out of the dark.