AI overview
I don't have enough context to write an accurate overview of "622." The context provided only indicates it's a year, but there are many significant historical events, references, or topics associated with 622 that I would need to know specifically which one you're asking about. Could you clarify what "622" refers to?
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Article
Muhammad's tomb (Green Dome) in Medina
Year 622 (DCXXII) was a common year starting on Friday of the Julian calendar, the 622nd year of the Common Era (CE) and Anno Domini (AD) designations, the 622nd year of the 1st millennium, the 22nd year of the 7th century, and the 3rd year of the 620s decade. The denomination 622 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.