[fsagx]

I didn't get it, so I looked it up.

22/7 ~= 3.14

[fuzztester]

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

[emmelaich]

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

(Yes this is worth fighting over!)

[xxs]

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