Answer 1

No, but you can make your own by creating some Date objects. Javascript provides a built-in Date object that gets the current date, or the date you have provided it. To create one, all you have to do is:
var end_date = new Date("1/1/2021 12:00 AM");
You can then get the time in milliseconds from now to then by creating a new Date object without a parameter, and subtracting end_date from that date. After that, converting the number of milliseconds to days, hours, minutes, and seconds should be simple.