Rare Cosmic Event to Transpire Tuesday Morning | Dr. Kaku's Universe | Big Think: This particular eclipse will coincide with the December winter solstice, the longest night of the year. A total lunar eclipse on a winter solstice is a very rare event: the last one took place over 450 years ago. It might be a good idea to try and brave the cold for the viewing, even if it's for 10-15 minutes every hour or so until it's complete, because you won't be able to enjoy it again until around 2401.