For those still looking, I decided to use defaultDate to fix this:
$( ".selector" ).datepicker({ changeMonth: true, changeYear: true, minDate: '-100Y', //100 Years Old maxDate: '0' //Today defaultDate: '-1Y', //Default to One Year Ago to show 12 months yearRange: '-100:+0' //Show 100 });
It still limits the date range, so no one can choose a date in the future and does not rely on user input in a specific order.
source share