var timeStamp = 999999;
var theDate = new Date(timeStamp * 1000);
var dateString = theDate.toGMTString();
Удобно читаемый
var timestamp = 99999999;
var a = new Date(timestamp * 1000);
var months = ['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];
var year =...