
Zodiac
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Year 13 ( XIII ) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar .
13
13
4
Year 4 ( IV ) was a common year starting on Wednesday or a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a leap year starting on Tuesday of the Proleptic Julian calendar . At the time, it was known as the Year of the Consulship of Catus and Saturninus [ disambiguation needed ] (or, less frequently, year 757 Ab urbe condita ).4

