Astronomical dating system

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It goes round the dial once every 24 hours, pointing outwards to the time of day.

The tail of the fleur-de-lys points to the day in the lunar month on the inner ring.

Historians should take care to note the numerical difference of one year between "BCE" dates and astronomical dates.

Astronomical date numbering was developed for astronomical calculations and is used extensively throughout this web site.

A mix of social networking, compatibility-testing and online dating, Ok Cupid is an unusual free dating site in that it allows its members to create the matching questions already pre-determined at sites like e Harmony or Chemistry.

In general, any given year "x BCE" becomes "-(x-1)" in the astronomical year numbering system.

More » A unique compatibility matching system takes twenty-nine different personality variables and determines who you are most suitable to date.

Unlike most other dating sites, e Harmony only allows users to contact those the system has determined to be highly compatible, and sometimes this process can take weeks - even months - to receive enough of a sample size to pay the higher-than-normal fee.

For instance, in the date AD 2001, the prefix "AD" stands for "Anno Domini" which is Latin for "the year of our Lord." Similarly, in the date 500 BC, the suffix "BC" stands for "Before Christ." In sixth century Europe, the concept of "zero" was still unknown. Furthermore, modern scholars believe Christ's birth was actually four years earlier than Exiguus thought.

In spite of these deficiencies, the dating system devised by Exiguus is now too deeply ensconced in the Western world to easily change.

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