upright=1.35|thumb|Ruins of [[Whitby Abbey (North Yorkshire)]]

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Year 664 (DCLXIV) was a leap year starting on Monday of the Julian calendar. The denomination 664 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.

Events

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By place

North America & Europe

  • 1 May &ndash; A solar eclipse affects areas along a line from Central America, through eastern North America, the North Atlantic, Ireland, Great Britain and Germany.

Great Britain & Ireland

  • Plague of 664
  • According to Bede, a Northumbrian monk and historian, the plague begins shortly after the eclipse of 1 May.