Hello Everyone!
I apologize for the delay in my response,
I found the solution using a combination of what you guys posted here and what I found at Stack Overflow and other web resources.
function formatDate(date) {
var d = new Date(date),
month = '' + (d.getMonth() + 1),
day = '' + d.getDate(),
year = d.getFullYear();
if (month.length < 2) month = '0' + month;
if (day.length < 2) day = '0' + day;
return [year, month, day].join('-');
}
var updated_until = formatDate($w("#datePicker6").value);
var updated_since = formatDate($w("#datePicker5").value);
Thanks for your help!