[LEAPSECS] it's WP7A week in Geneva

[Tony Finch]

On Thu, 10 Sep 2009, Rob Seaman wrote:

>

> It is precisely the fact of a international civil timescale that makes the

> timezone system work.


Yes.


> In return, the many timezones and numerous special cases represent

> constraints on the common underlying standard to better track mean solar

> time.


The constraints from timezones aren't tight enough to make any diffence to
leapseconds. For civil time the key requirement is that everyone agrees,
which is why timezones are wider than a second. The situation in Xinjiang
is a good example, because the argument over how to set the clocks is
entirely political and makes little practical difference to things like
business opening hours.

Tony.
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