We advise that a campaign runs for an initial maximum of three months - and six to eight weeks is better. Successful campaigns can always be extended, so focus first on delivering rapid success and demonstrating momentum. The launch date should give you enough time to successfully:
Ordinarily, this will require a minimum of three months - and six months would provide greater comfort.
Any non-crowdfunding project dates that are visible to the public should be considered as part of the campaign messaging.
For example - "We need your money to launch" will not work if your project is already launched. This is not particularly complex to manage, but the date, project state, messaging, and launch all need to be joined up.