Stoners have their ganja time at 4:20.
Hackers have their leet hour at 13:37.
American mathematicians have Pi Day on 3/14, and if they wanted, they could celebrate the Pi Fractional Second at 3:14:15.92 every day.
3.141592 are the digits i can reliably remember. On a good day, I can remember 3.1415926535.
I don't remember the digits. I remember
"three point fourteen
fifteen ninety-two
sixty-five thirty-five"
like a poem. Looks like I could add another line to it, to get a regular metre.