Which letter shows up once in summer, twice in autumn, and not at all in winter?
I’m a vowel. Look at the seasons’ spellings. Count how many times I appear. I’m not A, E, I, or O.
Hint: The other vowels are missing.
Looking for time riddles? You've found the right page. We've collected 3 kid-safe time riddles, ranging from quick "what am I" warm-ups to head-scratching brain-teasers. Each riddle includes the answer behind a tap, so kids get a chance to guess before peeking. Great as classroom starters, lunch-box surprises, or a family game.

43 time riddles
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I’m a vowel. Look at the seasons’ spellings. Count how many times I appear. I’m not A, E, I, or O.
Hint: The other vowels are missing.
Why are 1990 dollar bills worth more than 1989 dollar bills?
You have the misfortune to own an unreliable clock. This one loses exactly 24 minutes every hour. It is now showing 3:00am and you know that is was correct at midnight, when you set it. The clock stopped 1 hour ago, what is the correct time now?
Hint: You have the misfortune to own an unreliable clock…