Set the start and end dates once, and the badge switches itself on and off. Nothing to remember on the day.
Every badge has an optional schedule. Leave both fields empty and it runs without a time limit; fill them in and the badge appears and disappears on its own.
The schedule is checked when your storefront asks for badge data, not when the app last synced your products. That means the badge really does switch at the boundary rather than at the next sync.
If anything here was wrong, unclear or out of date, tell us — the article gets fixed the same day.
