The date displayed on a ticket is the date entered in the events individual settings. The format of the date is determined by the WordPress date format.
FooEvents currently supports the default date formats in the English version of WordPress only. Please note FooEvents does not currently support custom date formats.
You can change which date format to use here – WordPress Dashboard > Settings > General
Please note that after you’ve changed the date format you will have to edit each event, select the event date(s) again and click on “Update” before the date format change will be applied. New tickets that are emailed or existing tickets that are emailed again after this change will display the date in the new format.