node-red-contrib-hikvision-ultimate/nodes/utils/dateManagement.js

A native set of nodes for Hikvision (and compatible) Cameras, Alarms, Radars, NVR, Doorbells, etc.

exports.toHikvisionISODateString = function (date) {
    var tzo = -date.getTimezoneOffset(),
        dif = tzo >= 0 ? '+' : '-',
        pad = function (num) {
            return (num < 10 ? '0' : '') + num;
        };

    return date.getFullYear() +
        '-' + pad(date.getMonth() + 1) +
        '-' + pad(date.getDate()) +
        'T' + pad(date.getHours()) +
        ':' + pad(date.getMinutes()) +
        ':' + pad(date.getSeconds()) +
        dif + pad(Math.floor(Math.abs(tzo) / 60)) +
        ':' + pad(Math.abs(tzo) % 60);
}