[Dylan16807]

They didn't say not to round it!

For non-distorted time zones, when the clock strikes 12 everyone can look up and say that the sun is roughly closest to 12.

[sgdpk]

Yes, that's the point. Of course it should be sensible and rounded.

If we were too literal with this definition, 12 would even change everyday because of the analemma [1].

[1] https://en.m.wikipedia.org/wiki/Analemma