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.
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.
3481 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. :)
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.
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.
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.
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!