Old Moore's Almanack in the context of Charles II of England

An almanac (also spelled almanack and almanach) is a regularly published listing of a set of current information about one or multiple subjects. It includes information like weather forecasts, farmers' planting dates, tide tables, and other tabular data often arranged according to the calendar. Celestial figures and various statistics are found in almanacs, such as the rising and setting times of the Sun and Moon, dates of eclipses, hours of high and low tides, and religious festivals. The set of events noted in an almanac may be tailored for a specific group of readers, such as farmers, sailors, or astronomers.

Francis Moore (29 January 1657 – 1715) was an English physician and astrologer who wrote and published what later became Old Moore's Almanack.

He was born into poverty in Bridgnorth, reputedly in one of the cave dwellings in the vicinity of St Mary's Steps. Moore was self-educated, learning to read by himself, and became a physician and astrologer. He served at the court of Charles II of England.