How to get local time of different timezone in Postman? - postman

Question

I want to get local time of Rome time zone. Didn't find any details on how to use moment sandbox built-in library in postman documentation here postman_sandbox_api_reference
what I have tried so far
var moment = require('moment');
console.log(moment().tz(environment.TimeZone).format());
error it throws - TypeError | moment(...).tz is not a function
another attempt-
var moment = require('moment-timezone');
console.log(moment().tz(environment.TimeZone).format());
error it throws - Error | Cannot find module 'moment-timezone'
Where I'm going wrong? can anyone point me in right direction.
Thanks

Answer 1

Postman only has the moment library built-in and not moment-timezone.
If what you're doing isn't part of the moment docs, it's not going to work.
https://momentjs.com/docs/
As a workaround to get the data, you could use a simple 3rd party API.
Making a request to this endpoint would get you some timezone data that you could use.
http://worldtimeapi.org/api/timezone/Europe/Rome
This could be added to the pm.sendRequest() in the pre-request script to fetch the data you require and use this in another request.
pm.sendRequest("http://worldtimeapi.org/api/timezone/Europe/Rome", function (err, res) {
pm.globals.set("localTimeRome", res.json().datetime);
});

Answer 2

Actually, you can write a simple function to get local time in other time zones only with moment:
const moment = require('moment');
const TimeZoneUTCOffsetMapping = {
'America/Chicago': -6,
'Europe/Rome': 2,
'Asia/Shanghai': 8,
...
};
const LocalUTCOffset = 8;
function getMomentDisplayInTimeZone(momentObj, timeZone) {
let timeZoneUTCOffset = TimeZoneUTCOffsetMapping[timeZone];
if (timeZoneUTCOffset === undefined) {
throw new Error('No time zone matched');
}
return momentObj.add(timeZoneUTCOffset - LocalUTCOffset, 'hour').format('YYYY-MM-DDTkk:mm:ss');
}
console.log(getMomentDisplayInTimeZone(moment(), 'Europe/Rome'));