I grabbed a set if IP#'s from pool.ntp.org and monitored them in the 24
hours before and 8 hours after the leap.
I did something similar using the public NTP server lists on the
ntp wiki. I'm still collecting the data, but I have some plots of
what's happening with the leap bits at:
[A lot of discussion on this list seem to revolve around people
understanding terms in different ways. In an impractical example
of that spirit...]
I do not understand. As a function of TAI, UTC is neither continuous
nor monotone increasing in the mathematical sense.
To say if TAI is a
Yes: there is an order on the set of values of timescales -
it is a basic property of spacetime models that one can distinguish
past and present, at least locally. Spacetime is a differentiable
4-dimensional manifold, its coordinate functions are usually two
times
Professional and amateur astronomers are not the only ones who need good
estimates of UT1.
I've been wondering about this for a bit. Do astronomers and
navigators actually want UT1 or do they want GMST? Since UT1 is
based on a mean sun, which I guess no one actually observs, it would
seem that
I belive this was because the year followed the taxation cycle of the
government whereas the day+month followed the religiously inherited
tradtion.
Indeed. For that matter, the start of the U.K. tax year was left alone
when the calendar changed, and is now 6 April (it should be 7 April,
Quintilis was renamed after Julius Caesar. Later Sextilis was renamed
after Augustus Caesar. It is often said that the month lengths were
changed at the same time, but at least one version of that story is
fabricated and there's a distinct lack of evidence for it. Other emperors
had months
So you think it is appropriate to demand that ever computer with a
clock should suffer biannual software upgrades if it is not connected
to a network where it can get NTP or similar service ?
I know people who will disagree with you:
Air traffic control
Train control
