Sample for testing moment parsing methods and timezones

tz_test.js

"use strict";
console.log(process.env.TZ);
// process.env.TZ = "Asia/Shanghai";
let moment = require('moment');
const format = "YYYY-MM-DD";
let d, dUTC, dTZ, dJS;

const hours = ["00","01","02","03","04","05","06","07","08","09","10","11","12",
    "13","14","15","16","17","18","19","20","21","22","23","24"];

hours.forEach(hour => {
    let toParse = "2016-09-03T"+hour+":00:00.000Z";
    d = moment(toParse);
    dUTC = moment.utc(toParse);
    dTZ = moment.parseZone(toParse);
    dJS = new Date(toParse);

    console.log(`-----Hour: ${hour} ----------`);
    console.log(d.format(format));
    console.log(dUTC.format(format));
    console.log(dTZ.format(format));
    console.log(formatDate(dJS));
    console.log(dJS);
});

function formatDate(date){
    let year = ""+date.getUTCFullYear();
    let month = date.getUTCMonth() + 1;
    let day = date.getUTCDate();

    if (month < 10) {
        month = "0" + month;
    }else{
        month = "" + month;
    }

    if (day < 10) {
        day = "0" + day;
    }else{
        day = "" + day;
    }

    return year + "-" + month + "-" + day;
}