- Each day features a Mystery City with a hidden UTC offset.
- You're shown the UTC base time and clue cities with their local times.
- Deduce the mystery city's UTC offset (e.g. UTC+5:30).
- After each wrong guess, you'll see ↑ Too Low or ↓ Too High, and one more clue city is revealed.
- You have 6 guesses. The same puzzle is shared by everyone each day.
- Supports half-hour offsets (e.g. +5.5 = UTC+5:30). Step by 0.5.
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