Month (31 days) conversions

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The month (31 days) conversion selector selects the time measurement unit to convert to starting from months (31 days) (mo). To make a conversion starting from a unit of time other than month (31 days), simply click on the "Reset" button.

What is month (31 days)?

The month is a unit of time corresponding to the natural period it takes the Moon to return to a given position among the stars. A calendar month varies in length between 28 and 31 days.

One year in the Gregorian calendar has 7 months of 31 days (January, March, May, July, August, October, and December). The 12 months of the Gregorian Calendar are:

  • Month 1 - January: 31 days
  • Month 2 - February: 28 days (in common years) or 29 days (in leap years)
  • Month 3 - March: 31 days
  • Month 4 - April: 30 days
  • Month 5 - May: 31 days
  • Month 6 - June: 30 days
  • Month 7 - July: 31 days
  • Month 8 - August: 31 days
  • Month 9 - September: 30 days
  • Month 10 - October: 31 days
  • Month 11 - November: 30 days
  • Month 12 - December: 31 days
Symbol:

mo

Plural:

months (31 days)