The Moon orbits the Earth every days. The lunar cycle guides female menstruation and is used to measure duration of material manifestations such as in business and culture.
One Lunan is defined as thirteen lunar cycles. The Moons of the Lunan are counted from one to thirteen. Lunan is pronounced like loon-an.
The Lun is defined as the lunar date. As an origin in time, Moon one of Lunan zero is defined to begin at the full moon on the Gregorian date of December 28, 2012 at 10:22:21 hours GMT. Lun is pronounced like loon.
The Lun is used as a common frame of reference for date-keeping. The written indication of the Lun consists of a positive integer number representing the number of Lunan since Lunan zero began (or a negative until Lunan zero begins, when indicating the past), followed by a plus sign (+), followed by the number of the current Moon in the Lunan, followed by a plus sign, followed by the days elapsed in the current Lun. For example, today is Lun.
The lunar cycle is independent of both the solar cycle and the measure of a day. Thus the Lun is independent of the Sol and the Terr. Since the lunar cycle is not dependent on any particular location on Earth, the Lun at a given moment in time is the same at all locations on Earth.
The Lun may change at any moment during the day, and on the 29th day of the Moon it may change twice. For synchronization and reference across locations, the common Lun is defined as the Lun at daybreak at longitude zero. Thus on a calendar some Moons appear as 28 days and some as 29 days.
Back to chronometer