Local time is actually a measure of the position of the Sun relative to a locality. At 12 noon local time the Sun passes to the south and is furthest from the horizon (northern hemisphere). Somewhere around 6 am it rises, and around 6 pm it sets.
Local time -- Time adjusted for location around the Earth or other planets in time zones.
Longitude -- Great circles that pass through both the north and south poles, also called meridians.
LOS -- Loss Of Signal, used in DSN operations.
mean local time: {local mean time} see Time (types of).
mean solar day: the time between successive transits of the fictitious mean sun (i.e.
local time based on universal time. Civil time may be formally defined as mean solar time plus 12 hr; the civil day begins at midnight, while the mean solar day begins at noon.
the local time of day on a line of longitude centered on Greenwich, England (also known as Greenwich Mean Time); it forms the basis for all civil timekeeping
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variable star ...
They found the local time of the eclipse at Charlton Island to be 5.3 hours earlier than in London, England. Since an hour earlier corresponds to a difference of 15 degrees of longitude westward, that places Charlton Island 79.
local meridian The meridian through any particular place or observer, serving as the reference for local time, in contrast with Greenwich meridian.
By international agreement, the local time at the prime meridian, which passes through Greenwich, England. Therefore, it is also known as GREENWICH MEAN TIME, or sometimes simply UNIVERSAL TIME. CORONA.
*Most places on Earth use a time zone which is not equal to the local time, differing sometimes up to an hour, and even two hours if summer time is included. In that case, the Sun can rise for example at 8:00 and set at 20:00.
The precise local time of sunset also depends upon each location's precise longitude within a given time zone.
Table 1 lists approximate local times for major cities across the U.S. and Canada, when the partial eclipse will start, when it reaches maximum coverage of the Sun's disc, what percentage of the Sun will be obscured, and when the eclipse ends.
If the Moon is not visible, you can still deduce your local time from nearly any other object in the sky, but for this, you will need to know your position, or the rising and setting times of at least one celestial object, ...
The Jan Mayen data refer really to Göttingen mean time, but this was only twenty-three minutes late on local time.
For instance if an event is listed at 17:00 UT time, I would see it in Israel (+2 hours) at 19:00 local time or 7PM. Keep in mind that converting from UTC can change the date.
Now, Astronomical Noon is not always at 12:00 local time. In the winter when we are on Standard Time it is within an 1/2 hour or so of 12:00 -- closer if you live near the middle of your time zone.
A time zone is a region of the earth that has uniform standard time, usually referred to as the local time. By convention, time zones compute their local time as an offset from Coordinated Universal Time ....
s affect this in most places); ...
They could measure the local time, wherever they were by observing the Sun, but navigation required that they also know the time at some reference point, e.g. Greenwich, in order to calculate their longitude.
Harris reported the first detection just before 6am local time, with Dvorak's independent observation confirming the event shortly after.
Duffett-Smith, P. "Converting the Local Time to UT," "Converting UT to Local Civil Time," "`Sidereal Time," "Conversion of UT to GST," and "Conversion of GST to UT." §9-13 in Cambridge, England: Cambridge University Press, pp. 12-19, 1992.
Local sidereal time (abbreviated LST) is local time measured by the apparent motion of the stars (instead of the motion of the Sun). LST is measured by the right ascension that is currently at the observer's meridian of the local sky.
Venus Express was launched on a Soyuz-Fregat launcher from Baikonur Cosmodrome in Kazakhstan on Wednesday, October 26, 2005, at 06:33 CEST (04:33 GMT, 10:33 local time).
Local (abbreviated LST) is local time measured by the apparent motion of the stars (instead of the motion of the Sun). LST is measured by the that is currently at the observer's of the local sky.
UT (Universal Time) The local time at the 0 meridian passing through Greenwich, England; it is t he same everywhere. Same as GMT (Greenwich Mean Time).
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Vacuum A space absent of matter or nearly so.
Launch Date: July 3, 1998 UTC / July 4, 1998 local time
Arrival Date: January 2004
Planet-B was blasted off on one of Japan's 100-ft.-tall M-5 rockets from the Kagoshima Space Center's Uchinoura cosmodrome on the island of Kyushu Island, Japan.
Events on the calendar are organized by date and each is identified with an astronomy icon as outlined below. Times given in Coordinated Universal Time (UTC) must be converted to your local time.
local time. The first phase of the mission was to support the Mars Polar Lander from its landing on Mars on 3 December 1999 to the end of the lander primary mission on 29 February 2000.
APPARENT TIME
Apparent time is the local time, determined by the angle of the sun.
APPARENT SOLAR DAY
An apparent solar day is the period of time between two successive passages of the sun across a meridian.
Coordinated Universal Time. By international agreement, the local time at the prime meridian, which passes through Greenwich, England. Therefore, it is also known as Greenwich Mean Time, or sometimes simply Universal Time.
Sidereal time. The local time measured according to the apparent rotation of the celestial sphere. When the Vernal Equinox crosses the observer's meridian the sidereal time is 0 hours.
Sidereal. With respect of the stars.
How do time zones affect local time?
Are there half-hour time zones?
Who invented standard time?
Wmat makes up the atmosphere on Mars?
Who was Cleomedes?
What made Cleomedes famous?
When was William Parsons Rosse, 3d earl of born?
For recording observations of static objects, such as deep sky, I suggest the use of local time, not Universal Time (U.T.). U.T. is more useful for timing dynamic events, such as occultations or eclipses, or for meteor shower counts.
When you want, go online and make a note of how far off your local time is from UT.
The military use a 24 hour time system. They say "2100 hrs" or "twenty-one hundred hours" instead of "9PM".
Universal Time (UT)
also known as Greenwich Mean Time, this is local time on the Greenwich meridian. Universal time is used by astronomers as a standard measure of time.
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Vallis
a sinuous valley.
By knowing the expected time when an eclipse would be observed at a standard longitude (such as Greenwich), the time difference could be computed by accurately observing the local time of the eclipse.
Allan Rahill:
"Yes, Attilla got the idea to produce the CSC for exact localities and transformed UTC to local time." ...
Even though the local time for the longitude line under the satellite is near midnight, ...
The 'transit' date is simply the day (or evening to be more precise) at which time the star in question will be due south of the viewer at midnight local time.
Observers in the Northern Hemisphere can see Mars shining brightly in the southern sky (in the constellation Aquarius) just before dawn. Starting in mid-July, Mars can be seen to rise in the east around 11 p.m. local time.
High rates are expected between 2008 and 2010. The radiant rises at about 2 am in New Zealand, so observation is best from about 5 am by which time the radiant has a reasonable altitude. The radiant culminates at about 08h local time.
After that, it should fade rapidly; by mid-March you probably will need a small telescope to see it. This chart shows the comet's approximate position on each evening, at around 9 or 10 p.m. local time. [Tim Jones/Source: spaceweather.com] ...
umbra the total part of a shadow Universal Time (UT) local time on the Greenwich meridian
Z ...
 See also: Time, Earth, Sun, Minute, Sky
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