AI overview
I don't have any context provided about what "1579" refers to. To write an accurate overview based only on the context you've specified, I would need more information about what "1579" is—whether it's a historical event, a publication, a treaty, or something else. Could you provide additional context?
AI-generated from the Wikipedia summary — may contain errors.
Article
January 23: The Union of Utrecht is signed.
Year 1579 (MDLXXIX) was a common year starting on Thursday of the Julian calendar, and a common year starting on Monday of the Proleptic Gregorian calendar.