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Points of a 12-hour clockHorizontal sundial of 1812 matching the clock positions in Roman numerals on the outside dial to the points of a compass rose on the inside dial. The XII position is true north.
A clock position, or clock bearing, is the direction of an object observed from a vehicle, typically a vessel or an aircraft, relative to the orientation of the vehicle to the observer. The vehicle must be considered to have a front, a back, a left side and a right side. These quarters may have specialized names, such as bow and stern for a vessel, or nose and tail for an aircraft. The observer then measures or observes the angle made by the intersection of the line of sight to the longitudinal axis, the dimension of length, of the vessel, using the clock analogy.
In this analogy, the observer imagines the vessel located on a horizontal clock face with the front at 12:00. Neglecting the length of the vessel, and presuming that he is at the bow, he observes the time number lying on the line of sight.[1] For example, 12 o'clock means directly ahead, 3 o'clock means directly to the right, 6 o'clock means directly behind, and 9 o'clock means directly to the left.
The clock system is not confined to transportation. It has general application to circumstances in which the location of one object with respect to another must be systematized.
^Paul Stanley Bond; Thomas Lerey McMurray; Edwin Hunter Crouch (1923). Map Reading and Military Sketching: A Complete Practical Exposition of Map Reading and Map Making for Military Purposes. Baltimore, Maryland: New military library. p. 13.
A clockposition, or clock bearing, is the direction of an object observed from a vehicle, typically a vessel or an aircraft, relative to the orientation...
to the modern clock may be considered "clocks" that are based on movement in nature: A sundial shows the time by displaying the position of a shadow on...
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trillion, one more digit than the clock could display. The lit dollar-sign in the clock's leftmost digit position was later changed to the "1" digit...
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is the nickname for the Great Bell of the Great Clock of Westminster, and by extension for the clock tower itself, which stands at the north end of the...
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A shot clock is a countdown timer used in a variety of games and sports, indicating a set amount of time that a team may possess the object of play before...
clock is a clock that sounds the hours audibly on a bell, gong, or other audible device. In 12-hour striking, used most commonly in striking clocks today...
The Strasbourg astronomical clock is located in the Cathédrale Notre-Dame of Strasbourg, Alsace, France. It is the third clock on that spot and dates from...
A cuckoo clock is a type of clock, typically pendulum driven, that strikes the hours with a sound like a common cuckoo call and has an automated cuckoo...
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and values are published in astronomical almanacs.[citation needed] Clockposition List of orbits U.S. Naval Observatory Nautical Almanac Office (1992)...
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