How to display photo of the day using Unsplash API?

Question

Android

Good afternoon, there is a task to make a mobile client for the site unsplash.com. In the task, it is necessary to display the "photo of the day" on the main screen. Studying the API of the service, I could not find a request that solves my problem. Do you have any thoughts or maybe someone has worked with this API? The application itself is already 90% written, it remains only to file this feature. How exactly? This is where the difficulty lies.
The api itself
https://unsplash.com/documentation