I've put a request in for a feature to have a start date for the calendar view, but until that happens I have a work around if anyone needs it. Thanks to Nicolas I found out that the date is a parameter in the URL so if you go to your calendar on the date (it was a particular month for me) you want and then copy the url and replace your page and the newUrl with your url it will force the page to reload with your paramaters. There is a little flash when the page reloads, but it's not bad.
$(document).on('knack-page-render.scene_20', function(event, page) { var newUrl = "https://hdmann.knackhq.com/france-2015#fullcalendar/?view_42_view=month&view_42_date=%222015-07-01T06%3A00%3A00.000Z%22"; location.href = newUrl;});
HTH