The trick: 1 hour = 60 minutes. Pilots think in minutes, not decimals — fuel endurance, ETAs, flight times are all minute-counting jobs.

• :15 = 0.25 hr   :30 = 0.50 hr   :45 = 0.75 hr
• :06 = 0.10 hr   :12 = 0.20 hr

Worked example: 2:15 → 2 × 60 + 15 = 135 minutes. Take off 10:45 + 95 min airborne → 10:45 + 1:35 = 12:20 landing.

How to play. Each round is 12 questions. Start in CADET — turn HH:MM into total minutes. Move to PILOT when that's automatic — add two flight legs together and give the total in minutes. Then try TOWER — takeoff time plus airborne duration, give the landing time as a 4-digit clock reading (HHMM, 24-hour), against the clock with bonus points when the hour rolls over. Beat the top 10 and you'll be invited to add your callsign to the leaderboard.