June 1st (1670) was a Sunday. It's the 151st day of the year (152nd in leap years) in the Gregorian calendar. There are 214 days left to the end of the year.
Historical Events for 1st June, 1670
» In Dover, England, Charles II of Great Britain and Louis XIV of France sign the secret treaty of Dover, which will force England into the Third Anglo-Dutch War.
June 1st Holidays in History
» Public holidays in Portugal or Azores Day (Azores)