I understand, you want to parse a date string that includes a timezone offset at the end, like "+01:00". With Carbon, you can pass that full date string into the parse() method and specify the timezone using the "e" format character. For example:

```php
Carbon::parse('2022-03-16 15:30:00+01:00', 'Y-m-d H:i:sO');
```
The "O" format character tells Carbon to parse anything following it as the timezone offset. So this allows you to parse dates that include the offset directly in the string.

If you want to format the timestamp output to show a date/time in a specific timezone, you can call the setTimezone() method and then use formatting characters to display the date/time. For example:

```php
$carbon = Carbon::parse('2022-03-16 15:30:00+01:00', 'Y-m-d H:i:sO');
$carbon->setTimezone('America/New_York');
echo $carbon->format('Y-m-d H:i:sO'); // Output: 2022-03-16 10:30:00-0400
```
This would take the original date with +01:00 timezone and convert it to the Eastern Time timezone, outputting the date/time with the -04:00 offset.

Let me know if you have any other questions!
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