GENERAL KNOWLEDGE

Detailed explanation-1: -A lunar calendar is a calendar based on the monthly cycles of the Moon’s phases (synodic months, lunations), in contrast to solar calendars, whose annual cycles are based only directly on the solar year.

Detailed explanation-2: -Evidence from the Shang oracle bone inscriptions shows that at least by the 14th century BC the Shang Chinese had established the solar year at 365¼ days and lunation at 29½ days. In the calendar that the Shang used, the seasons of the year and the phases of the Moon were all supposedly accounted for.

Detailed explanation-3: -The ancient Egyptians used a lunar calendar exclusively until they adopted their solar calendar. The lunar calendar was then used for their religious festivals and rituals, but for their daily lives, the ancient Egyptians used a solar calendar which contained 365 days per year.