AI overview
I don't have enough context to write an accurate overview of "620." The single word "year" doesn't clarify what "620" refers to—it could be the year 620 CE, a route number, a statute, a scientific measurement, or something else entirely. I need more specific context to provide a factually accurate overview.
AI-generated from the Wikipedia summary — may contain errors.
Article
The Sasanian Empire ca. 620
Year 620 (DCXX) was a leap year starting on Tuesday of the Julian calendar. The designation 620 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.