Markus Kuhn said:
> The US and UK are
> actually no different from that, except that the subtle differences
> between GMT and UTC have escaped political attention in these two
> countries so far, and as a result, they still have a technically rather
> vague definition of time in their law books,

Actually, UK law is clear that civil time is GMT/GMT+1.

Last night I found myself talking to a UK legislator on the matter of UTC
versus GMT. We got as far as the quadratic nature of the TAI-UT1
difference, and that it was smaller than expected because - according to my
reading - of crustal rebound following the last ice age.

At which point we were both confused about the physics involved. If the
crust is rebounding after being compressed by ice sheets, surely the
earth's moment of inertia will increase and the rotation should slow *more*
than otherwise expected. So can someone unconfuse us, please?

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