In message: <[EMAIL PROTECTED]>
John Cowan <[EMAIL PROTECTED]> writes:
: Warner Losh scripsit:
:
: > There's no provision for emergency leapseconds. They just have to be
: > at the end of the month, and annoucned 8 weeks in advance. IERS has
: > actually exceeded this mandate by announcing them ~24 weeks in advance
: > in recent history.
:
: So much the worse. That means that if the Earth hiccups on March 7, the
: value of |DUT1| will not return to normal until May 31.
Yes. But it would take a change in angular momementum would likely
mean that |DUT1| being a little too large would be the least of our
worries.
The earthquake that hit Indonesia last year changed the time of day by
microseconds. What would cause a sudden jump of hundreds of
milliseconds hurts my brain to contemplate.
Warner
