Astronomical Year Numbering - Signed Years Without Year 0

Signed Years Without Year 0

Although he used the usual French terms "avant J.-C." (before Jesus Christ) and "après J.-C." (after Jesus Christ) to label years elsewhere in his book, the Byzantine historian Venance Grumel used negative years (identified by a minus sign, −) to label BC years and unsigned positive years to label AD years in a table, possibly to save space, without a year 0 between them.

The XML Schema language, sometimes used in connection with representing data for storage in computers, contains built-in primitive datatypes, date and dateTime, which do not allow a year zero, and designate years BC as negative numbers. Years contain at least four digits. Thus -0001 in that language is equivalent to 1 BC. However, the defining recommendation indicates a change to a system similar to ISO 8601 and astronomical year numbering is likely in the future.

Read more about this topic:  Astronomical Year Numbering

Famous quotes containing the words signed, years and/or year:

    My fellow Americans, I am pleased to tell you today that I’ve signed legislation which outlaws Russia forever. The bombing begins in five minutes.
    Ronald Reagan (b. 1911)

    The great word Evolution had not yet, in 1860, made a new religion of history, but the old religion had preached the same doctrine for a thousand years without finding in the entire history of Rome anything but flat contradiction.
    Henry Brooks Adams (1838–1918)

    They tapped at my eyelids and touched my lips with an invitation to grief.
    But it was no reason I had to go because they had to go.
    Now up, my knee, to keep on top of another year of snow.
    Robert Frost (1874–1963)