Definition:Calendar/Julian/Year

Definition
A Julian year is the length of a year as defined using the Julian calendar.


 * $1$ Julian year $= \begin{cases} 366 \, \text {days} & : 4 \mathrel \backslash y \\

365 \, \text {days} & : 4 \nmid y \end{cases}$ where:
 * $y$ denotes the number of the year
 * $4 \mathrel \backslash y$ denotes that $y$ is divisible by $4$
 * $4 \nmid y$ denotes that $y$ is not divisible by $4$.

Also see

 * Discrepancy between Julian Year and Tropical Year