Video Description: "Exploring traditional Nordic calendar systems, looking at the Nebra Disk, the Roman Tacitus, the Old English chronicler Bede and the Poetic Eddas. Basics of lunar calendar systems. First in a series. See the crescent moon align with the Pleiades constellation, as pictured on the ancient Nebra disk, Monday March 30, ~04:00-PDT - best viewing for North America probably Sunday evening March 29, 2009."