To make a story last longer than 24 hours, you could expand on the backstories of the main characters, introduce unexpected twists and turns, and incorporate elements of mystery or suspense that keep the readers engaged and wanting more.
One way to make a story last longer is to slow down the pacing in key moments, allowing for more detailed descriptions and emotional exploration. Also, you could create multiple story arcs that interweave and build upon each other.
You can introduce subplots and secondary characters to add depth and complexity, which naturally extends the story's duration.