Julian Day Number

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• julian day number — noun Usage: usually capitalized J : the number of a day in the Julian day calendar (as 2,436,934 for January 1, 1960) …   Useful english dictionary

• Julian day — JDN redirects here. For the military IT system, see Joint Data Network. For the comic book character Julian Gregory Day, see Calendar Man. Not to be confused with Julian year (disambiguation). Julian day is used in the Julian date (JD) system of… …   Wikipedia

• Julian Day — Astron. a serial number equal to the number of days elapsed since January 1, 4713 B.C., proposed by Joseph Scaliger in 1582 and used in astronomical calculations: January 1, 1965, at noon, Greenwich Civil Time, was Julian Day 2,438,762.0. Abbr.:… …   Universalium

• Julian Day — Astron. a serial number equal to the number of days elapsed since January 1, 4713 B.C., proposed by Joseph Scaliger in 1582 and used in astronomical calculations: January 1, 1965, at noon, Greenwich Civil Time, was Julian Day 2,438,762.0. Abbr.:… …   Useful english dictionary

• Julian year (astronomy) — In astronomy, a Julian year (symbol: a) is a unit of measurement of time defined as exactly 365.25 days of 86,400 SI seconds each, totalling 31,557,600 seconds. That is the average length of the year in the Julian calendar used in Western… …   Wikipedia

• Julian calendar — The Julian calendar began in 45 BC (709 AUC) as a reform of the Roman calendar by Julius Caesar. It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year (known at… …   Wikipedia

• Day count convention — In finance, a day count convention determines how interest accrues over time for a variety of investments, including bonds, notes, loans, mortgages, medium term notes, swaps, and forward rate agreements (FRAs). This determines the amount… …   Wikipedia

• Revised Julian calendar — The Revised Julian calendar, also known as the Rectified Julian calendar, or, less formally, New calendar, is a calendar, originated in 1923, which effectively discontinued the 340 years of divergence between the naming of dates sanctioned by… …   Wikipedia

• Julian Lennon — Cynthia and Julian Lennon at the unveiling of the John Lennon Peace Monument in Liverpool 9 October 201 …   Wikipedia

• Julian Bovis — Julian Bovis, born 2nd of April 1969 is a British journalist and Newspaper Art Director. He was born in Banbury, United Kingdom and although studying Architecture at University of Plymouth, rose to prominence in the newspaper industry in the… …   Wikipedia

• Julian Lincoln Simon — (born February 12, 1932; died February 8, 1998 in Chevy Chase, Marylandcite web |url=http://query.nytimes.com/gst/fullpage.html?res=950DE0DD153CF931A25751C0A96E958260 |title=Julian Simon, 65, Optimistic Economist, Dies |last=Gilpin |first=Kenneth …   Wikipedia