If you require the gadgets to be set at a specific date or a certain number of days from the current date you can utilise either of two parameters.

defaultDate

With this parameter you can hard-set a particular date you would like the gadget to default to. This option accepts a string of the format 'dd/mm/yyyy', or a JS date object.

defaultDaysFromToday

This parameter allows you to set a number of days from the current date as the default from the search.