Keep up with the latest lunar assemblies, holidays, and other events using the Gregorian calendar. Celtic Holidays and astronomical events are based on historical Coligny Calendar markings as well as standing stones, and lastly modern scientific calculations. The Coligny calendar not only includes lengthier Festival days, but it includes many auspicious days in between called “MD” meaning Mat Day, or “auspicious/good day”. Much like the modern Hindu calendar, there are various days throughout every month that in times past indicated something auspicious or inauspicious whether that entailed the position of the sun, the phase of the moon, the day of the month. Each period of time had days dedicated undoubtedly to certain Deities, Divine Heros, etc.