AI overview
I don't have enough context to write an accurate overview of "520." The word "520" could refer to many different things (a year, a route number, a date, a code, etc.), and you've only provided "year" as context, which doesn't clarify which specific meaning is intended. Could you provide more information about what "520" refers to?
AI-generated from the Wikipedia summary — may contain errors.
Article
The Kingdom of East Anglia (6th century)
Year 520 (DXX) was a leap year starting on Wednesday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Rusticus and Vitalianus (or, less frequently, year 1273 Ab urbe condita). The denomination 520 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.