timestring

Parse a human readable time string into a time based value

jstimezonedetect

This script gives you the zone info key representing your device's time zone setting. The return value is an IANA zone info key (aka the Olson time zone database).

node-datetime

Extended Date object for javascript. 1. Handles offests by days and hours. 2. Built-in formatting function. 3. Time based value calculation.