[Vitaly_C]

I vaguely recall this was an important fact to know for a 90s puzzle video game.

Maybe it was The Seventh Guest? Or Myst?

[hnbad]

I recall there being a clock face puzzle in The Seventh Guest but I couldn't tell you if it involved that fact.

[smrq]

Can't be Myst as they have their own base 25 numbering system :)

(Ok, that originated from the sequel, but it's still canonical to the universe.)