2608 BC, December 31, Tuesday —China The Yellow Emperor of China had an observatory erected to observe the motions of celestial objects for the purpose of maintaining the accuracy of their calendar. 2607 BC, January 22 (JC)

2647 BC, March 27, Sunday —Kemet, Egypt Egyptian astronomers in Kemet, Egypt couldn’t help but notice Halley’s Comet passing by earth. They went crazy and came up with some crazy plans for a new line of pyramid building. 2647 BC, April 18 (JC)

2773 BC, December 8, Friday —Egypt: Egypt successfully invented the first solar calendar in the world. Other calendars are based on the moon. The calendar consists of 365 days. There are twelve 30-day months plus a 5-day holiday thrown in at the end of the year for good measure. The

5165 BC, December 31, Wednesday –Whole Freakin’ Planet: Holy year of the magnetosphere! The sun took a shot at planet earth with an EXTREME Solar Particle Event (SPE). 5164 BC, February 10 (JC)