You can now schedule the date and time for your islands to be published using the new Scheduled Publishing functionality in the Creator Portal. Once your island passes moderation, it will go live automatically at the scheduled time, eliminating the need for manual timing.
No more staying up late or waiting around to launch your game. Schedule releases in advance, and take the opportunity to increase island performance by timing them to coincide with major events or simply at a time when you will be offline! Scheduling a new release in advance also enables you to generate an island code to use in marketing to help you plan your releases like a pro.
Find out more here: Schedule Publishing in Fortnite | Fortnite Documentation | Epic Developer Community