All Topics  
Julian year

 

 
   Email Print
   Bookmark   Link
 

 

Julian year
 
  A Julian year can refer to:

  • The Julian year (astronomy)
    Julian year (astronomy)

    In astronomy, a Julian year is a Units of measurement of time defined as exactly 365.25 days of 86,400 International System of Units seconds each, totalling 31,557,600 seconds....
     is a time interval of exactly 365.25 days, used in astronomy
    Astronomy

    Astronomy is the science of Astronomical object and Phenomenon that originate outside the Earth's atmosphere . It is concerned with the evolution, physics, chemistry, meteorology, and motion of celestial objects, as well as the physical cosmology....
    .
  • The Julian year (calendar) is a year in the Julian calendar
    Julian calendar

    The Julian calendar, a reform of the Roman calendar, was introduced by Julius Caesar in 46 BC, and came into force in 45 BC . It was chosen after consultation with the astronomer Sosigenes of Alexandria and was probably designed to approximate the tropical year, known at least since Hipparchus....
     which has started on different days, at different times, in different countries and is equal to either 365 or 366 days, or 365.25 days on average.