Time for Moon to complete one rotation on its axis
See also: Synodic day
For the tidal lunar day of about 24 hours and 50 minutes, see Tide.
A full lunar day observed from the Earth, where orbital libration causes the apparent wobble.
A lunar day is the time it takes for Earth's Moon to complete on its axis one synodic rotation, meaning with respect to the Sun. The lunar day is therefore the time of a full lunar day-night cycle. Due to tidal locking, this equals the time that the Moon takes to complete one synodic orbit around Earth, a synodic lunar month, returning to the same lunar phase. The synodic period is about 29+1⁄2 Earth days, which is about 2.2 days longer than its sidereal period.
A lunarday is the time it takes for Earth's Moon to complete on its axis one synodic rotation, meaning with respect to the Sun. The lunarday is therefore...
Lunar New Year is the beginning of a new year based on lunar calendars or, informally but more widely, lunisolar calendars. Lunar calendars follow the...
same side of the Moon to always face Earth. Because of this, the lunarday and the lunar month are the same length, at 29.5 Earth days. The Moon's gravitational...
A lunar lander or Moon lander is a spacecraft designed to land on the surface of the Moon. As of 2024, the Apollo Lunar Module is the only lunar lander...
minor compared to the difference between lunar night and lunarday. At the lunar poles, instead of usual lunar days and nights of about 15 Earth days,...
third tithi (lunarday) of the bright half (Shukla Paksha) of the month of Vaisakha. Akshaya Tritiya is regionally observed as an auspicious day by Hindus...
sunrise to another. The lunarday is called tithi (तिथि), and this is based on complicated measures of lunar movement. A lunarday or tithi may, for example...
timekeeping on Earth is the length of a day on the Moon, being the lunarday or lunar month, observable from Earth as the lunar phases, and the differences between...
In lunar calendars, a lunar month is the time between two successive syzygies of the same type: new moons or full moons. The precise definition varies...
The Lunar Ejecta and Meteorites Experiment (LEAM) was a lunar science experiment that flew to the Moon on board Apollo 17 in 1972. It collected information...
A lunar eclipse is an astronomical event that occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. Such an alignment occurs...
observed purely lunar calendar is the Islamic calendar. A purely lunar calendar is distinguished from a lunisolar calendar, whose lunar months are brought...
The Cold Cathode Gauge Experiment, also known as the Lunar Atmosphere Detector, was a scientific package that flew on board Apollo 12, Apollo 13, Apollo...
separated from it later that day. On 1 October 2023, SLIM executed its trans-lunar orbit injection burns. The lander entered lunar orbit on 25 December 2023...
allowing better video from the lunar surface. There were actually four lenses developed for this camera including the lunarday lens and the wide angle lenses...
Charged Particle Lunar Environment Experiment (CPLEE), placed on the lunar surface by the Apollo 14 mission as part of the Apollo Lunar Surface Experiments...
of the time of day or day of the year, and the relatively stable temperature range. Detailed lunar topography collected by the Lunar Reconnaissance Orbiter...
conduct and virtue. The festival falls on the ninth day of the bright half (Shukla Paksha) of the lunar cycle of Chaitra (March–April), the first month in...
romanized: Ēkādaśī, lit. 'The eleventh day') is the eleventh lunarday (tithi) of the waxing (Shukla Pakṣa) and waning (Kṛṣṇa Pakṣa) lunar cycles in a Vedic calendar...
Peregrine Lunar Lander flight 01, commonly referred to as Peregrine Mission One, was an unsuccessful American lunar lander mission. The lander, dubbed...
with titles containing LunarLunar calendar, based upon the monthly cycles of the Moon's phase Lunarday, in such calendars Lunar month, in such calendars...
धनत्रयोदशी), is the first day that marks the festival of Diwali in most of India. It is celebrated on the thirteenth lunarday (Trayodashi) of Krishna Paksha...
Moon's synodic day (the lunarday or synodic rotation period) is the same as its synodic period with Earth and the Sun (the period of the lunar phases, the...
paternal ancestors"', IAST: Pitṛ pakṣa), also spelt Pitri Paksha, is a 16-lunarday period in the Hindu calendar when Hindus pay homage to their ancestors...
existence of a tenuous lunar atmosphere and determined the upper bounds on the lunar atmospheric density during the lunarday and night, but left its...
minor compared to the difference between lunar night and lunarday. At the lunar poles, instead of usual lunar days and nights of about 15 Earth days,...
Phonta or Bhratri Dwitiya is a festival celebrated by Hindus on the second lunarday of the Shukla Paksha (bright fortnight) of Kartika, the eighth month of...
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