Lilian date

Lilian date

A Lilian date is the number of days since the beginning of the Gregorian Calendar on October 15 1582, regarded as Lilian date 1. It is named for Aloysius Lilius who devised the Gregorian Calendar. It was invented by Bruce G. Ohms of IBM in 1986.

Another, better known, date notation that is used for similar purposes is the Julian date. Universal time, or closely related time scales, are always used with the Julian date, the day begins at noon, and a decimal fraction may be used to represent the time of day. In contrast, Ohms did not make any mention of time zones or time of day in his paper; the Lilian date is a pure date format. If time is reckoned in Universal Time, and the Lilian date is taken to begin at midnight, the Lilian date can be obtained from the Julian date by subtracting 2299160.5 from the Julian date and ignoring the decimal fraction in the result. Lilian dates can be used to calculate the number of days between any two dates occurring since the beginning of the Gregorian calendar.

References

*cite journal
last = Ohms
first = Bruce G
title = PDFlink| [http://researchweb.watson.ibm.com/journal/sj/252/ibmsj2502J.pdf Computer processing of dates outside the twentieth century] |629 KiB
journal = IBM Systems Journal
volume = 25
pages = 244–251
date = 1986
publisher = IBM

ee also

*Rata Die


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Lilian Jegou — Lilian Jegou …   Wikipédia en Français

  • Lilian Jégou — Durant les Quatre jours de Dunkerqu …   Wikipédia en Français

  • Lilian Drescher — Lilian Kelaidis Lilian Kelaidis Carrière professionnelle …   Wikipédia en Français

  • Lilian Kelaidis — Carrière professionnelle 1982 – 1988 …   Wikipédia en Français

  • Lilian Thuram — Lilian Thuram …   Wikipédia en Français

  • Lilian Garcia — Lilian García Lilian Annette Garcia Pseudo(s) de lutte Lilian Garcia Taille 1 m 69 Poids …   Wikipédia en Français

  • Lilian Simms — Personnage de Desperate Housewives Alias Lilian Simms (nom marital) Naissance Da …   Wikipédia en Français

  • Lilian Oldland — Born Lilian Mary Oldland 7 February 1903 Gloucester, Gloucestershire Died October 1984 (aged 81) London, England Years active 1925–1935 Lilian Oldland (7 February 1903 – October 1984) was a British actress who appeared in more than twenty films… …   Wikipedia

  • Lilian di salvo — Lilian Di Salvo …   Wikipédia en Français

  • Lilian Zanchi — Parlementaire français Date de naissance 21 avril 1968 Mandat Député Début du mandat 2 septembre 2006 Fin du mandat 19 juin  …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”