Definition of Julian year

Definition of Julian year
  1. Julian year Noun (history) A year in the old Julian calendar (which started on different dates).
  2. Julian year Noun (astronomy) An "average year" of 365 days and six hours, used for convenience of quick calculations, as opposed to a calendar year of either 365 or 366 days, and a mean tropical year of 365 days, 5 hours, 48 minutes and 45 seconds.
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