The POSIX committee considered whether Unix time should remain, as intended, a linear count of seconds since the epoch, at the expense of complexity in conversions with civil time or a representation of civil time, at the expense of inconsistency around leap seconds.
32.
Each speaking clock ensemble consisted of two announcing units ( Zag 500 ), a supervisory unit ( CCU 500 ), two phase-locked oscillators, two pulse distribution units, a Civil Time Receiver ( plus a spare ), and two or four Computime 1200 baud modems.
33.
The Texas Democrats, even though their sessions will end around the cocktail hour because they're angling for East Coast prime-time TV from the West Coast, will also get their get their breakfast marching orders at the more civil time of 9 a . m.
34.
Legally, the civil time used in Britain is called still " Greenwich mean time " ( without capitalisation ), according to the Interpretation Act 1978, with an exception made for those periods when the Summer Time Act 1972 orders an hour's shift for daylight saving.
35.
GMT was superseded as the international civil time standard by Coordinated Universal Time ( UTC ) in 1960, when the International Radio Consultative Committee formalized the concept of Coordinated Universal Time, abbreviated as UTC . It is, within about 1 second, mean solar time at 0?
36.
It was used in the " Almanac " for the years 1898 1950 as the independent variable of time for a few tables ( even though Washington's civil time since 1883 had been that of the standard time zone GMT " 5 hours ( 75�W ) ).
37.
"' Standard time "'or "'civil time "'in a region deviates a fixed, round amount, usually a whole number of hours, from some form of Universal Time, now usually UTC . The offset is chosen such that a new day starts approximately while the sun is crossing the nadir meridian.
38.
This resembles the manner in which time zone tables must be consulted to convert to and from civil time; the IANA time zone database includes leap second information, and the sample code available from the same source uses that information to convert between TAI-based time stamps and local time.
39.
Because Universal Time is synchronous with night and day, and more precise atomic-frequency standards drift away from this, however, UT is still used to produce a correction ( called a leap second ) to atomic time, in order to obtain a broadcast form of civil time that carries atomic frequency.
40.
HM Nautical Almanac Office in the United Kingdom used Greenwich Mean Time ( GMT ) for both conventions, leading to ambiguity, whereas the Nautical Almanac Office at the United States Naval Observatory used GMT for the pre-1925 convention and Greenwich Civil Time ( GCT ) for the post-1924 convention until 1952.
