12/10/2022 = 10
1+2=3
1+0=1
2+2+2= 6
3+1+6=10
12/11/2022 = 11
12/12/2022 = 12
12/13/2022 = 13
12/14/2022= 14
12/15/2022=15
12/16/2022= 16
And so forth until the 20th and it doesn’t work anymore.
12/20/2022=11

I thought this was pretty cool when I saw it.