Set Default Timezone

Change default timezone from local time zone to your custom timezone.

You can still custom a different timezone in a specific dayjs object.

TIP

This requires the Timezone plugin to work

dayjs.extend(utc);
dayjs.extend(timezone);

dayjs.tz.setDefault('America/New_York');

// The same behavior with dayjs.tz("2014-06-01 12:00", "America/New_York")
dayjs.tz('2014-06-01 12:00'); // 2014-06-01T12:00:00-04:00

// use another timezone
dayjs.tz('2014-06-01 12:00', 'Asia/Tokyo'); // 2014-06-01T12:00:00+09:00

// reset timezone
dayjs.tz.setDefault();

Notice: dayjs.tz.setDefault will not affect existing dayjs objects.