Creating a calendar for Rana Station
By Jan S. Gephardt Since our prehistory, humans have focused on creating a calendar, then using it to keep time. We’ve based calendars on the seasons, the sun, and the moon. We’ve scratched symbols into clay, bone or stone, dug sequences of pits, erected poles, or even dragged enormous stones for fabulous distances, all to get a handle on “WHEN are we?” But creating a calendar that’s accurate over a long period of time is a harder thing to do…