Standard Time
Related Category: Astronomy: General
civil time used within a given time zone. The earth is divided into 24 time zones, each of which is about 15° of longitude wide and corresponds to one hour of time.
standard time
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standard time zone: [TZ] a geographical region which uses a single civil time. These are approximately regions between two lines of longitude, set 15° apart, and hence with 1 hour time difference between adjacent zones.
Eastern Standard Time may refer to:*Australian Eastern Standard Time, UTC+10*Eastern Time Zone, UTC-5*Time in Brazil, UTC-3...
. When the U.S. is on daylight saving time, Eastern Daylight Time is the same as Atlantic Standard Time.
Standard time stations
How to display the second hand on a digital clock radio
eukaryotic cell ...
Atlantic Standard Time ZoneAtlantic StarAtlantic Starr
Atlantic StationAtlantic Street (NLR station)Atlantic sturgeon
Atlantic SunAtlantic Sun ConferenceAtlantic Sun Conference men's basketball tournament locations ...
standard temperature and pressure (NASA SP-7, 1965) Null standard time (NASA SP-7, 1965) See time. standard value of gravity (NASA SP-7, 1965) See acceleration of gravity.
The creation of Standard Time
Since the late 19th century, the Prime Meridian at Greenwich has served as the reference line for Greenwich Mean Time. Before this, almost every town in the world kept its own local time.
Eastern Standard Time
This Saros series -- like any family of Saros eclipses -- won't continue on forever.
The world is divided into a number of standard time zones. Roughly speaking, there are 24 time zones spaced at intervals of 15° in longitude. (Practically, due to geographic and political factors, the boundaries of time zones are more circuitous.
The Eastern Standard Time zone is 3 hours ahead of the Pacific Standard Time zone. The Pacific timezone meridian is at 120° W longitude. What is the longitude of the Eastern Time zone meridian?
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January 24 PST Pacific Standard Time, local at NASA JPL
12:05 a.m. January 25 EST Eastern Standard Time, Washington DC
0505 January 25 UTC coordinated universal time or GMT ...
When figuring out times, use standard times first, and add one hour to the calculated time at the end if you need your answer in daylight savings time. Therefore, if the Moon is full, and just rising, it must be 9 p.m. standard time! ...
If you are on Daylight Saving Time, subtract one hour to get Standard Time. Then convert this to Universal Time by adding 4, 5, 6, 7, or 8 hours, depending on whether you live in the Atlantic, Eastern, Central, Mountain, or Pacific time zone.
In addition, "clock time" (or "standard time") will differ from sundial time, because it is usually kept uniform across "time zones"; each time zone differs from its neighbors by one full hour (more in China and Alaska).
Standard time returns at 2 am on the first Sunday in November (note that different time zones are switching at different moments).
Use of the term "MTC" as the name of a planetary standard time for Mars first appeared in the Mars24[3] sunclock coded by the NASA Goddard Institute for Space Studies.
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.
Date and time of observation (use Eastern Standard Time)
Nearest major street intersection, and city/town.
Your age bracket (25 and under, 26 to 35, 36 to 45, 46 to 55, over 55) ...
AEST Australian Eastern Standard Time.
ACST Australian Central Standard Time.
Albedo The ratio of light reflected from a Solar System object to that received by it. (A complete reflection gives an albedo of 1.0 or 100%).
The closest approach was at 23 hours, 8 minutes, 47 seconds Japan Standard Time with a geocentric distance of 88,997 kilometers (55,303 miles). This was the first planet-swingby for a Japanese spacecraft.
Example 1: March 11, 2007, at 3 a.m. Eastern Standard Time the Universal Time (UT) would be. (Note that we have already passed the Daylight Savings at 2 a.m. this day! So, time zone will be 4 hours instead of 5 hours): ...
Time, Standard Mean (SMT)
Mean solar time for some standard adopted longitude (for example, Eastern Standard Time, Central European Time, Mountain or Pacific Standard Times; see: scholar pages about time).
For example, 23:00 UT is 6 pm Eastern Standard Time or 7 pm Eastern Daylight Time. Astronomers use Universal Time to describe when celestial events happen in a way that is independent of an observer's time zone.
NASA's Deep Space Network tracking station in Madrid, Spain, acquired a signal at about 4:00 p.m. Pacific Standard Time (7:00 p.m. Eastern Standard Time). As anticipated, the spacecraft came within 1,200 kilometers (750 miles) of Titan's surface.
G.M.T. -- Greenwich Mean Time. The time at Greenwich, England, which is used as the basis for standard time throughout the world.
whenever it is necessary to have a common time recognized across international border for instance by seamen, pilots, radio operators and SkyWatch subscribers, the time at Greenwich is still used today. Nowadays instead of calling the standard time ...
Eastern Standard Time (EST) is five hours earlier than Universal Time.
Van Allen Belts Two ring-shaped regions that girdle the Earth's equator in which electrically charged particles are trapped by the Earth's magnetic field.
standard time See time. standard value of gravity See acceleration of gravity. standing wave A periodic wave having a fixed distribution in space which is the result of interference of progressive waves of the same frequency and kind.
 See also: Time, Earth, Light, Day, Sun
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