Is this not a schedule?
The Fall 2013 Salty Dawg Rally will depart on November 4 (weather permitting) from Bluewater Yachting Center, Hampton, VA (or other locations of your choice), to sail to the British Virgin Islands, the Bahamas, or other various locations.
I don't see the difference here. The times I have gone off shore, with the exception of racing, a departure date was determined and we left when the weather permitted. Think that's fairly typical.