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Archive for March 30th, 2010

This happens to me almost every month — I have to stop and think about how many days there are.

Some months I know by heart. January has 31, February 28, October has 31, December 31. But those months in between — March, April, May, June, July, August, September, November — I honestly don’t know.

I use the fist method (aka the knuckle method). It sounds crude, and it is. I form my hand into a fist then act like I’m about to do a fist bump with a friend. As I’m looking at the fist from the top, I use the knuckles and valleys that my fist makes to count the months.

Knuckles stand for 31 days, valleys for 30 (except in the case of February, which is 28).


fist with months
Counting Months on your Fist, iPhone photo of ybonesy’s fist,
March 30, 2010, image © 2010 by ybonesy. All rights reserved.



So, using the fist method we learn:

  • First knuckle hump is January — 31 days
  • Valley is February — 28 days
  • Knuckle is March — 31
  • Valley is April — 30
  • Knuckle is May — 31
  • Valley is June — 30
  • Knuckle is July — 31


At this point we run out of fist, so we start over:

  • First knuckle is August — 31 (this is when we remember that July and August both have 31 days)
  • Valley is September — 30
  • Knuckle is October — 31
  • Valley is November — 30
  • Knuckle is December — 31



If like me you were trying to remember if March has 30 days or 31, now you know. And you’ve learned an easy method to always be able to figure out how many days there are in a given month.

I know, I am a font of helpful information.

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