Baucherie Marie Dragon Perpetual Calendar Chronograph Is A Model Of Timepiece Art
In 46 BC, the Egyptian astronomer Sosigenes formulated the basis of the modern calendar: a year is divided into twelve months, of which seven months have 31 days, four months have 30 days, and one month has 29 days, or 365.25 days a year, one day in four years. Later, …