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)

    “Finishing schools in the fifties were a good place to store girls for a few years before marrying them off, a satisfactory rest stop between college weekends spent husband hunting. It was a haven for those of us adept at styling each other’s hair, playing canasta, and chain smoking Pall Mall extra-long cigarettes.”
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    “For six years you shall sow your land and gather in its yield; but the seventh year you shall let it rest and lie fallow, so that the poor of your people may eat; and what they leave the wild animals may eat. You shall do the same with your vineyard, and with your olive orchard.”
    —Bible: Hebrew, Exodus 23:10,11.