Autoship order processing timeframe
The automated order processing that Autoship performs is a job that runs on your Wordpress host, so while specifying a timeframe is completely optional, it may be helpful for your host to specify this.
In your wordpress admin, you can adjust WC Autoship settings to specify the start and end time for when Autoship orders should be processed.
The start and end time is dependent on the timezone set in your Wordpress Admin. If you do choose to set a start or end time for Autoship order processing, ensure that the timezone setting in WP-Admin > Settings > General is accurately set for your store's timezone.