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30 Days Hath September

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There's a cool mental calculation hack I recently learned for this: If you open the calendar app on your phone or computer, the highest-numbered box along the bottom is equal to the number of days in the month!
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jbuergel
3099 days ago
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At some point, I learned a different way to remember this. Put your fists together, and then start counting across your knuckles and the gaps between them. Knuckle? 31 days. In between? Not 31 days. Thanks to your anatomy, July and August line up correctly, and off you go.
hannahdraper
3098 days ago
Yep, that's how I learned it as a kid.
JEFFnSoCal
3098 days ago
ditto. That's the only way I can keep it straight.
trekkie
3098 days ago
44 years old, and I still do this every now and then.
achmed13
3098 days ago
Works great until you get to second January and second February.
elangomatt
3097 days ago
This is my way of remembering too except I don't put my fists together, it works just fine if you go from your pinky knuckle back to your index finger knuckle.
3095 days ago
Did you own the book "500 Helpful Hints for Kids" back in the '80s? Because that's what I've always done, and that's where I learned it. :)
jbuergel
3095 days ago
I'm reasonably sure I got it from a classmate in elementary school at some point, but it's been ages, so it's fuzzy.
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mw
3097 days ago
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The rhyme is and always was stupid. You can fit other months into it seamlessly: "Thirty days hath December, April, May, and November.
gerweck
3098 days ago
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I learned using the "count your knuckles" trick, which I find a _lot_ easier than trying to use that rhyme.
Make a fist and touch your first knuckle (pointer finger, not your thumb) then count off the months. The knuckles have 31 days and the spaces between are 30 except February. When you get to the end of your hand (July), start over with your pointer knuckle again.
You can do the same algorithm in your head pretty easily once you learn the pattern.
tedder
3098 days ago
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months are based on the yearly solar/orbit cycle. weeks don't have any basis, right? So Mondays are Mondays because of tradition and good recordkeeping, right? Trippy.
Uranus
gangsterofboats
3098 days ago
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Simpler: from January to July, inclusive, it alternates between 31 and 30 days, with the obvious exception of February. Then, August to December, inclusive, again it alternates between 31 and 30, no exception this time.
CallMeWilliam
3098 days ago
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best reason to move to a 13-month, 28 each day calendar.
mooglemoogle
3098 days ago
Except for the one month that will be 29 or 30 days
CallMeWilliam
3098 days ago
mooglemoogle: Handle this with one day that is *not* part of a week or a month. That's how Kodak did it.
alt_text_bot
3099 days ago
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There's a cool mental calculation hack I recently learned for this: If you open the calendar app on your phone or computer, the highest-numbered box along the bottom is equal to the number of days in the month!