The Magna Carta was agreed and sealed by King John at Runnymede on 15 June 1215, not formally “signed” in the modern sense.

Quick Scoop: Exact Date

  • Historical date: 15 June 1215.
  • Place: Runnymede, a meadow by the River Thames near Windsor, England.
  • Technical detail: The king used his great seal; medieval charters were usually “sealed,” not literally signed.

So, if you’re answering a quiz or homework question about “when was the Magna Carta signed,” the safe, accepted answer is: 15 June 1215.

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