Converting Odata to UTC comes up with strange date "Wed Dec 31 20:00:02 UTC - 0400 1969" Javascript

Hello,

So i'm trying to get a date from a field using Odata (javascript). Everytime I get it I'm converting it to UTC but it keeps returning the date "Wed Dec 31 20:00:02 UTC - 0400 1969". I don't know why. This is the code I'm using.

Note: waitingdatevalue has the date value from Odata.

var dt = waitingdatevalue.replace("/Date(", "").replace(")/","");
var dateValue = new Date(parseInt(dt, 10));

PLease help!