SMRTR Science & EngineeringMay 28, 2025John D. Cook

How often to the hands of a clock line up?

SMRTR summary

An analog clock's hour and minute hands align 22 times daily. Starting at midnight, they realign every 12/11 hours, with the first occurrence at 1:05:27.3. This pattern repeats throughout the day, demonstrating the cyclical nature of timekeeping. Including the second hand, all three hands align only at noon and midnight.

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