How to Convert an Existing PHP DateTime Object From One Time Zone to Another?

Find out how you can convert date/time from one time zone to another in PHP

If you have an already instantiated DateTime object, then you can change its time zone by calling the DateTime::setTimezone() method, for example, in the following way: 

$existingDateTime->setTimezone(new DateTimeZone('Europe/Berlin'));

For example, consider the following DateTime object that's instantiated with a time zone set to 'Europe/London', but is later changed to 'Europe/Berlin' by using the DateTime::setTimezone() method: 

$dt = new new DateTime('now', new DateTimeZone('Europe/London'));
// ...
$dt->setTimezone(new DateTimeZone('Europe/Berlin'));
// ...

You can get the list of supported time zones from the official PHP documentation.

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