(moment-timezone). convert time from one timezone to another timezone

Question

I am in India, and selecting time 9:00 AM, and timezone eg. 'America/Dawson' and I want to convert time according to selected timezone to 'America/New_York' timezone.But Not getting result

    var currentDate = new Date()
    currentDate.setHours(9, 0, 0);
    moment.tz.setDefault('America/Dawson')
    var currentDateMom = moment(currentDate)
    var oldTimezoneTime = currentDateMom.tz('America/New_York').format('YYYY-MM-DD HH:mm:ss ZZ');
    console.log(oldTimezoneTime)

Answer 1

We can use the moment.tz constructor to create our moment object with the correct year, month, day, hour etc values.

This will create a moment date in the America/Dawson timezone with the date set to the current date and time to 09:00.

We can then use the .tz() function to convert to the new timezone (America/New_York)

function getTimeInTimezone(year, month, day, hour, minute, second, timeZone) {
    // Construct using an array of date elements...
    const dateArr = [year, month, day, hour, minute, second];
    return moment.tz(dateArr, timeZone);
}

const now = new Date()

const year = now.getFullYear();
const month = now.getMonth();
const day = now.getDate();
const hour = 9;

const originalTimeZone = 'America/Dawson';
const newTimeZone = 'America/New_York';

const timeInOriginalTimeZone = getTimeInTimezone(year, month, day, hour, 0, 0, originalTimeZone);
const timeInNewTimeZone = moment(timeInOriginalTimeZone).tz(newTimeZone);

console.log('Timezone'.padEnd(20), 'Time');
console.log(originalTimeZone.padEnd(20), timeInOriginalTimeZone.format('YYYY-MM-DD HH:mm:ss'));
console.log(newTimeZone.padEnd(20), timeInNewTimeZone.format('YYYY-MM-DD HH:mm:ss'));

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