It was on June 7 in 1776 that the idea of independence was first officially proposed in the Continental Congress. Richard Henry Lee of Virginia introduced and John Adams seconded the following:
Resolved, That these United Colonies are, and of right ought to be, free and independent States, that they are absolved from all allegiance to the British Crown, and that all political connection between them and the State of Great Britain is, and ought to be, totally dissolved.
That it is expedient forthwith to take the most effectual measures for forming foreign Alliances.
That a plan of confederation be prepared and transmitted to the respective Colonies for their consideration and approbation.
The vote on the resolution was set aside until July 1st — it actually occurred on July 2nd. On June 11th Congress appointed the Committee of Five to draft a formal declaration of independence — John Adams of Massachusetts, Benjamin Franklin of Pennsylvania, Thomas Jefferson of Virginia, Robert R. Livingston of New York, and Roger Sherman of Connecticut.
June 7: Resolution introduced
July 2: Resolution approved (12 colonies for; New York abstained, later voted for)
July 4: Declaration of Independence approved
On the Fourth of July we celebrate the birth announcement, not the birth.