A calendar that measures the passage of the year according to the phases of the moon, as opposed to the revolution of the earth around the sun; a calendar of the lunar year.

A calendar used to count down the days of Advent, having windows revealing a hidden picture or gift on each day.

A calendar based on the movement of the Earth and the Moon around the Sun, which defines the year.

plural of solar calendar

plural of lunar calendar

(law) A timespan of exactly 24 hours, measured from one midnight to the next. / A day having a conventional designation on a recognized calendar, such as a numerical identification within a named month.

The amount of time between the beginning of the first day of January and the end of the last day of December in the Gregorian calendar. (365 days, or 366 in a leap year)

A rhythm method of natural birth control.

plural of calendar day

plural of lunisolar calendar