Solar Calendar Lunar Calendar. As the name would suggest, the lunar calendar observes the. It’s a collection of newsworthy events in spaceflight and astronomy curated by the paper’s.

Discover all about solar calendars, also known as sun calendars, including how they are used and how they work in relation to their counterpart, the lunar calendar. The solar calendar is based on the rotations of the sun and the lunar calendar is based on the rotations of the moon.