period, period of time, time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"

calendar week, week - a period of seven consecutive days starting on Sunday

date - the particular day, month, or year (usually according to the Gregorian calendar) that an event occurred; "he tried to memorizes all the dates for his history class"

Revolutionary calendar month - a month in the Revolutionary calendar

Gregorian calendar month - a month in the Gregorian calendar

Jewish calendar month - a month in the Jewish calendar

Islamic calendar month - any lunar month in the Muslim calendar

Hindu calendar month - any lunisolar month in the Hindu calendar

time unit, unit of time - a unit for measuring time periods

year - the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun; "a Martian year takes 687 of our days"

new moon, new phase of the moon - the time at which the moon appears as a narrow waxing crescent

half-moon - the time at which the moon is at first or last quarter when half its face is illuminated

full moon, full phase of the moon, full-of-the-moon - the time when the moon is fully illuminated

lunar month, lunation, synodic month, moon - the period between successive new moons (29.531 days)

anomalistic month - period between successive perigees; approximately 27.5546 days

sidereal month - period between successive conjunctions with a star, 27.322 days

solar month - one-twelfth of a solar or tropical year