What is a Calendar ?

The world "Calendar" is an old roman term, it was used to designate the first of the month. We can also find the latin word "Calendrium" which means a register. This term inspired the french language since it adopted the term "Calendier", and from there the english one "Calender".

A Calendar is a system that help people to organize days, for administrative, commercial or religious needs, a calendar is composed of different periods of time: days, weeks, months and years. A Calendar can also represented as a list of planned events such as a holidays calendar, or birthdays calendar.

The periods withing a calendar are associated with sun or moon cycles, the most modern one, is the lunisolar calendar, it means that the lunar calendar is synchronized with the solar calendar.

Calendar 2019

Calendar 2020