Terrestrial Time (TT) is a modern astronomical time standard defined by the International Astronomical Union, primarily for time-measurements of astronomical...

Look up terrestrial in Wiktionary, the free dictionary. Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to:...

for ships on the high seas. As an ideal form of the terrestrial time zone system, nautical time zones consist of gores of 15° offset from GMT by a whole...

yearly due to daylight saving time transitions. Some other time standards are used mainly for scientific work. Terrestrial Time is a theoretical ideal scale...

Time (86,400 seconds). Formally, ΔT is the time difference ΔT = TT − UT between Universal Time (UT, defined by Earth's rotation) and Terrestrial Time...

Coordinated Mars Time (MTC) Ephemeris time IERS Reference Meridian ISO 8601 List of UTC timing centers Terrestrial Time Universal Time World Radiocommunication...

worldwide. It is a continuous scale of time, without leap seconds, and it is the principal realisation of Terrestrial Time (with a fixed offset of epoch). It...

Equation of time International Atomic Time Ist (disambiguation page) John Goldingham Railway time in India Sri Lanka Standard Time Terrestrial Time Time in India...

clocks gave rise to the atomic time scale, and to what was first called Terrestrial Dynamical Time and is now Terrestrial Time, defined to provide continuity...

Terrestrial animals are animals that live predominantly or entirely on land (e.g. cats, chickens, ants, spiders), as compared with aquatic animals, which...

coordinates in use today refer to 2000 TT (i.e. to 12h (noon) on the Terrestrial Time scale on January 1, 2000, see below), which occurred about 64 seconds...

astronomers introduced Ephemeris Time, which has since been replaced by Terrestrial Time (TT). Because Universal Time is determined by the Earth's rotation...

Delta time can mean: ΔT (timekeeping), the time difference between Universal Time and Terrestrial Time. Delta timing, a technique used in graphics programming...

represents the number of Julian centuries elapsed since noon 1 January 2000 Terrestrial Time. Six of the eight solar planets have prograde rotation—that is, they...

Terrestrial television or over-the-air television (OTA) is a type of television broadcasting in which the content is transmitted via radio waves from...

E.T. the Extra-Terrestrial (or simply E.T.) is a 1982 American science fiction film produced and directed by Steven Spielberg and written by Melissa Mathison...

A terrestrial planet, telluric planet, or rocky planet, is a planet that is composed primarily of silicate, rocks or metals. Within the Solar System,...

realization of Terrestrial Time (TT), a theoretical timescale that is a rescaling of TCG such that the time rate approximately matches proper time at mean sea...

Coordinate Time (TCB). A feature that distinguishes TDB from TCB is that TDB, when observed from the Earth's surface, has a difference from Terrestrial Time (TT)...

from the Julian date referred to Terrestrial Time (TT), as MSD = (JDTT − 2405522.0028779) / 1.0274912517 Terrestrial time, however, is not as easily available...

sandglass, sand timer, or sand clock) is a device used to measure the passage of time. It comprises two glass bulbs connected vertically by a narrow neck that...

difference between two time scales, Universal Time and Terrestrial Time, which results from a drift in the length of a day The interval of time used in determining...

nautical time zone system is analogous to the terrestrial time zone system for use on high seas. Under the system time changes are required for changes of longitude...

time used for consistency in calculation of positions and orbits. A common astronomical epoch is J2000, which is noon on January 1, 2000, Terrestrial...

Autonomous Region on the Chinese side. The border marks the greatest terrestrial time zone difference on Earth, with a 3.5 hour difference between Afghanistan's...

engine ΔT (timekeeping), the time difference between Universal Time (UT, defined by Earth's rotation) and Terrestrial Time (TT, independent of Earth's...

time intervals measured on Earth's surface (Terrestrial Time, TT) are not constant when compared with the motions of the planets: the terrestrial second...

transferring money Terrestrial Time, an astronomical time standard Time trial, in racing sports, a race against the clock to secure the fastest time TT Pro League...

Terrestrial locomotion has evolved as animals adapted from aquatic to terrestrial environments. Locomotion on land raises different problems than that...

should use the Terrestrial Time scale, or its predecessor, ephemeris time. The exact length of an astronomical year changes over time. The positions of...