Q: How to change cPanel or WHM PHP Timezone
You can browse to “WHM >> MultiPHP INI Editor” and use the “Editor Mode” tab for the version of PHP associated with the account to ensure the PHP “date.timezone” value is correct. It defaults to UTC.
You can also use this tool inside of cPanel which will over ride WHM server wide setting.
You will need to select the version of PHP you wish to modify
Valid timezone strings are here: PHP: List of Supported Timezones - Manual
You should view your php information and scroll to timezone before and after the change.