apply_filters( 'tribe_tickets_rewrite_base_slugs' )
If you want to modify the base slugs before the i18n happens, use this filter All the bases need to have a key and a value, they might be the same or not.
Each value is an array of possible slugs: to improve robustness the "original" English slug is supported in addition to translated forms for month, list, today and day: this way if the forms are altered (whether through i18n or other custom mods) after links have already been promulgated, there will be less chance of visitors hitting 404s.
The term "original" here for:
- events
- event
Means that is a value that can be overwritten and relies on the user value entered on the options page.