In this case, four different numbers were inserted, with dots between them: the rightmost one is a timestamp of the number of seconds since January 1, 1970, known as the Unix epoch ; to the left of it is the process ID of the program that generated the message ( on servers running Unix or Linux, each process has a number which is unique among the processes in progress at any moment, though they do repeat over time ); to the left of that is a count of the number of messages generated so far by the current process ; and the leftmost number is the number of parts in the current message that have been generated so far.

In astronomy, an epoch is a specific moment in time for which celestial coordinates or orbital elements are specified, and from which other orbital parametrics are thereafter calculated in order to predict future position.

If the epoch is defined to be at the moment when one of the elements is zero, the number of unspecified elements is reduced to five.

In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as celestial coordinates, or elliptical orbital elements of a celestial body, where these are ( as usual ) subject to perturbations and vary with time.

This epoch is considered a real re-awaking moment for Iran.

Present knowledge is unable to determine what happened during the Planck era, and the Bogdanov publications purported to have discovered what happened during this earliest epoch, and even before the moment of the singularity itself.

In astronomy, an epoch specifies a precise moment in time.

One could also say that it is the earliest moment in time, as the Planck time is perhaps the shortest possible interval of time, and the Planck epoch lasted only this brief instant.

Computerized sources, on the other hand, are able to calculate the right ascension and declination of the " epoch of date " to the exact instant of observation.

The consequence of this early date is that due to the precession of the equinoxes, the borders on a modern star map, such as epoch J2000, are already somewhat skewed and no longer perfectly vertical or horizontal.

A calendar era indicates a span of many years which are numbered beginning at a specific reference date ( epoch ), which often marks the origin of a political state or cosmology, dynasty, ruler, the birth of a leader, or another significant historical or mythological event ; it is generally called after its focus accordingly as in Victorian era.

An impression has sometimes arisen that ephemeris time was in use from 1900: this probably arose because ET, though proposed and adopted in the period 1948 – 1952, was defined in detail using formulae that made retrospective use of the epoch date of 1900 January 0 and of Newcomb's Tables of the Sun.

The splitting date between human and chimpanzee lineages is placed around 4-8 million years ago during the late Miocene epoch.

The Jewish calendar's epoch ( reference date ), 1 Tishrei 1 AM, is equivalent to Monday, 7 October 3761 BCE in the proleptic Julian calendar, the equivalent tabular date ( same daylight period ) and is about one year before the traditional Jewish date of Creation on 25 Elul AM 1, based upon the Seder Olam Rabbah of Rabbi Yossi ben Halafta, a 2nd century CE sage.

James M. Poitras has written that he chose this epoch for the date and time routines in a package developed by his group at MGH in 1969:

* 3761 BC – The epoch reference date epoch ( origin ) of the modern Hebrew calendar ( Proleptic Julian calendar ).

** Epochal date or event, see epoch ( reference date )

A proposed but as of yet informal third epoch, the Anthropocene, has also gained credence as the time in which humans began to profoundly affect and change the global environment, although its start date is still disputed.

The date of Friday December 13 20: 45: 52 1901 is significant for modern computers because it is the earliest date representable with a signed 32-bit integer on systems that reference time in seconds since the Unix epoch.

* April 6 – first New Year's Day of the solar calendar adopted by Siamese King Chulalongkorn with the 106th anniversary of Bangkok's founding in 1782 as its epoch ( reference date ).

Time measurement units are counted from the epoch so that the date and time of events can be specified unambiguously.

The time kept internally by a computer system is usually expressed as the number of time units that have elapsed since a specified epoch, which is nearly always specified as midnight Universal Time on some particular date.

For example, for an epoch date of midnight UTC on January 1, 1900, and a time unit of a second, the time of the midnight between January 1 and 2, 1900 is represented by the number 86400, the number of seconds in one day.

The date from Thucydides, which is probably the most likely, is incompatible with this earlier epoch.

The earliest known butterfly fossils date to the mid Eocene epoch, between 40 – 50 million years ago.

The isolation of Antarctica by the current is credited by many researchers with causing the glaciation of Antarctica and global cooling in the Eocene epoch.

For normal calculation a number zero is often needed, here most notably when calculating the number of years in a period that spans the epoch ; the end years need only be subtracted from each other.

How closely we can extrapolate towards the singularity is debated — certainly no closer than the end of the Planck epoch.

This general cultural movement is today known as the Sramanic tradition and the epoch of new thought as the axial era.

As a rule of thumb, a scattering or a decay process is cosmologically important in a certain cosmological epoch if the time scale describing that process is smaller or comparable to the time scale of the expansion of the universe, which is with being the Hubble constant at that time.

The cosmic microwave background is radiation left over from decoupling after the epoch of recombination when neutral atoms first formed.

In the current cosmological epoch, the accelerated expansion due to dark energy is preventing structures larger than superclusters from forming.

The term " inflation " is also used to refer to the hypothesis that inflation occurred, to the theory of inflation, or to the inflationary epoch.

With an essential principle like " when the epoch changed, the ways changed ", it upholds the rule of law and is thus a theory of jurisprudence.

Unlike the related gray wolf, which is Eurasian in origin, evolutionary theory suggests the coyote evolved in North America during the Pleistocene epoch 1. 81 million years ago ( mya ) alongside the dire wolf.

This is a specific epoch in a fictional timeline created by Howard for many of the low fantasy tales of his artificial legendary.

The Chinese year beginning January 23, 2012 is reckoned in the seldom-used continuously numbered system to be 4709, 4649, or 4710, depending on the epoch used.

The most widely used epoch is a conventional birthdate of Jesus ( which was established by Dionysius Exiguus in the sixth century ).

Cosmologists refer to the time period when neutral atoms first formed as the recombination epoch, and the event shortly after of photons starting to travel freely through space rather than constantly scattering with electrons and protons in plasma is referred to as photon decoupling.

The currently used standard epoch is J2000. 0, which is January 1, 2000 at 12: 00 TT.

The prefix " J " indicates that it is a Julian epoch.

* David B. Allison is an early translator of Derrida and states in the introduction to his translation of Speech and Phenomena that: signifies a project of critical thought whose task is to locate and ' take apart ' those concepts which serve as the axioms or rules for a period of thought, those concepts which command the unfolding of an entire epoch of metaphysics.

The Eocene ( symbol E < sub > O </ sub >) epoch, lasting from about 56 to 34 million years ago ( to ), is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era.

The Eocene epoch is usually broken into Early and Late, or-more usually-Early, Middle, and Late subdivisions.