Monthly Knuckles

[DaveP]

I have never been able to remember or make use of the little ditty that others use to remember how many days there are in each month. Instead I use my knuckles when I want to quickly determine how many days a particular month has [and I have done for many years]

Today I saw that someone had posted a reply on another forum [the reply referenced another website] about this method. I found it surprising that others were not aware of it. I post a link to the referenced website here and ask do you use the same method/had you heard of it?

Link: Monthly Knuckles : TipNut.com

Edit: The ditty:

Thirty days hath September,
April, June, and November;
All the rest have thirty-one,
Save February, with twenty-eight days clear,
And twenty-nine each leap year.

[SC-UK]

I've always used the ditty to remember it, but will be using the knuckle method from now on - simply as I've never seen it before and it's quite impressive (which I possibly shouldn't admit!)