All times in UTC ·
Dashed edge = started before, or continues beyond, this day
Events on Saturday 21 June 1788 1
1788US Constitution secures required ratificationsNew Hampshire becomes the ninth state, making the Constitution operativeNew Hampshire ratified the Constitution on 21 June 1788, giving it the nine-state majority needed to take effect. Virginia and New York ratified soon after, on 25 June and 26 July respectively, securing adoption by the key remaining states.