What is decimal calendar?

The decimal calendar is a proposed reform of the Gregorian calendar that uses a base-10 system to divide the year, month, and day. This calendar system proposes to divide the year into ten months of 36 or 37 days, with an additional five or six days added at the end of the year as holidays. The months are named after numbers 1 through 10.

The decimal calendar was proposed by French mathematician and astronomer Édouard Roche in the late 19th century. The calendar system was designed to simplify chronological calculations and make arithmetic easier. The decimal calendar was also intended to be more accurate than the Gregorian calendar.

While the decimal calendar has never been adopted officially, some people still use it for various purposes, such as scheduling events or conducting research. However, there are several practical challenges to implementing a decimal calendar, including the need to change international agreements and conventions, and the economic costs of implementing such a system.