Actually closer to π and matches the more sensible date format.

(Yes this is worth fighting over!)

while true that month being 1st making little sense, the good format usually features leading zeros, so '22/07'

355 / 113

( = 3.1415929204 )

is one approximation I have read about, attributed by some, to ancient or medieval Indian or Chinese mathematicians.

https://en.wikipedia.org/wiki/Approximations_of_pi