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What is a Month?

Time Unit

Definition

A month is a unit of time based on the Moon's orbit around Earth, typically 28-31 days in the Gregorian calendar.

History

Months originated from lunar cycles. The word 'month' comes from 'moon'. Modern calendar months vary in length.

Common Uses

  • Billing cycles and subscriptions
  • Rent and mortgage payments
  • Age measurement for babies
  • Project timelines

Fun Facts

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February is the only month with fewer than 30 days

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A lunar month is about 29.5 days

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The Knuckle method helps remember which months have 31 days

All Month Conversions