Main Page | See live article | Alphabetical index A lunar conjunction is the moment of the new moon, when the sun, moon and earth are approximately in a straight line in that order. The period of time between two lunar conjunctions is the synodic month, which is a basic unit in most lunar and lunisolar calendars such as the Hebrew calendar. The opposite moment, when the sun, earth and moon are in approximately in a straight line in that order, is a full moon or lunar opposition. This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.