wp_clear_scheduled_hook()

Function: Unschedules all events attached to the hook with the specified arguments.

Source: wp-includes/cron.php:201

wp_unschedule_hook()

Function: Unschedules all events attached to the hook.

Source: wp-includes/cron.php:233

Function: Retrieve the next timestamp for an event.

Source: wp-includes/cron.php:256

Function: Sends a request to run cron through HTTP request that doesn’t halt page loading.

Source: wp-includes/cron.php:275

Filter Hook: Filters the cron request arguments.

Source: wp-includes/cron.php:352

Function: Run scheduled callbacks or spawn cron for all scheduled events.

Source: wp-includes/cron.php:371

Function: Retrieve supported event recurrence schedules.

Source: wp-includes/cron.php:426