var monthsArr = ["янв", "фев", "мар", "апр", "мая", "июн", "июл", "авг", "сен", "окт", "ноя", "дек"];
d = new Date();
d.setMinutes(d.getMinutes() + k);
var year = d.getFullYear();
var month = d.getMonth();
var numDay = d.getDate();
var hour = d.getHours();
var minute = d.getMinutes();
var second = d.getSeconds();
if (numDay < 10) numDay = "0" + numDay;
if (hour < 10) hour = "0" + hour;
if (minute < 10) minute = "0" + minute;
if (second < 10) second = "0" + second
U= numDay + " " + monthsArr[month] + " " + year + ", " + hour + ":" + minute + ":" + second;
так как-то