section_path: Astronomical years/Heliacal year/Sothic year
section_name: Sothic year
paragraph_text: Sothic year
  
  The Sothic year is the heliacal year, the interval between heliacal risings, of the star Sirius. It is currently less than the sidereal year and its duration is very close to the Julian year of 365.25 days.