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Qué (quién) es Epoch - definición
REFERENCE POINT FROM WHICH TIME IS MEASURED
Epoch (timekeeping); Epoch date; Epochal event; Epochal date; Epoch event; Epochal criteria; Epoch criteria; Epoch (reference date); Epochs; Epoch (date); EPOCH; Calendar epoch; Epoch of 1970-01-01; Epoch of 1900-01-01; Epoch of 1601-01-01; Epoch of 1950-01-01; Epoch of 1960-01-01; Epoch of 2000-01-01; Epoch (date reference); Reference epoch
epoch
1. <operating system> (Probably from astronomical timekeeping)
A term used originally in Unix documentation for the time
and date corresponding to zero in an operating system's
clock and timestamp values.
Under most Unix versions the epoch is 1970-01-01 00:00:00 GMT;
under VMS, it's 1858-11-17 00:00:00 (the base date of the US
Naval Observatory's ephemerides); on a Macintosh, it's
1904-01-01 00:00:00.
System time is measured in seconds or ticks past the epoch.
Weird problems may ensue when the clock wraps around (see
wrap around), which is not necessarily a rare event; on
systems counting 10 ticks per second, a signed 32-bit count of
ticks is good only for 0.1 * 2**31-1 seconds, or 6.8 years.
The one-tick-per-second clock of Unix is good only until
2038-01-18, assuming at least some software continues to
consider it signed and that word lengths don't increase by
then. See also wall time.
2. <editor> (Epoch) A version of GNU Emacs for the {X Window
System} from NCSA.
[Jargon File ]
(2004-06-10)
epoch
n.
1) to mark; usher in an epoch
2) a glacial; revolutionary epoch
epoch
(epochs)
If you refer to a long period of time as an epoch, you mean that important events or great changes took place during it.
The birth of Christ was the beginning of a major epoch of world history.
N-COUNT: usu with supp
Wikipedia
Epoch
In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured.
The moment of epoch is usually decided by congruity, or by following conventions understood from the epoch in question. The epoch moment or date is usually defined from a specific, clear event of change, an epoch event. In a more gradual change, a deciding moment is chosen when the epoch criterion was reached.
Ejemplos de uso de Epoch
1. It signals Ethiopias irreversible entry into a democratic epoch.
2. Almost all of us are children of two epochs: the epoch of peace and human rights which began in the 1'60s, and the epoch of low–tax efficiency that began in the 1'80s.
3. "We are passing through epoch–making times in the history of our country.
4. But many Epoch Times staffers, including Gregory, are part of the movement.
5. Mammoths first appeared in the Pliocene Epoch, 4.8 million years ago.