Fixed a real-world problem: NASA’s official Mars Rover Photos API was returning 404 errors on every request — confirmed it wasn’t my code by testing the exact documented URL directly, even with their public demo key. Pivoted to reusing the same NASA APOD endpoint I’d already gotten working, but requesting a random historical date instead of today — gives varied real space photos on each sticky note while staying reliable. Learned how to generate a random date between two points using Date.getTime() and Math.random().