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Old September 22nd 10, 10:40 AM posted to sci.astro.amateur,uk.sci.astronomy
oriel36[_2_]
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Posts: 8,478
Default formula for astronomical midnight at Greenwich, in UT?

On Sep 22, 10:00*am, wrote:
correction is simple).

Bud - am I right to think that if I used the formula you posted for
GMST, I'd need to keep a table of the UT of the vernal equinox each
year? Or am I barking up completely the wrong tree? Excuse my newbie
ignorance, but I don't understand how to use that formula to get
astronomical midnight on any particular day of the year, in UT.

Thanks again!

Michael


This is a system of consensual bluffing,anyone who uses calendar dates
is automatically using the 1641 calendar system or the steady
progression of 24 hour days formatted as 365 days for 3 years and 366
days for one year with the present system ending Feb 29th 2012.

This screwing around with 366 1/4 rotations for an orbital circuit
arising from 'sidereal time' reasoning is the worst for when you can't
explain what the extra Feb 29th rotation does in completing 4 orbital
circuits made up of 365 1/4 rotations ,science and astronomy become
pointless.

There is no phone number to call to inform them of the most serious
known breach of logical consistency even to descend on humanity for
its breeds a hatred of basic astronomical principles that have to be
seen to be believed for even though the spinning Earth/celestial
sphere convenience would constitute something which could be
considered as a novelty for civil timekeeping purposes and related
endeavors it cannot,cannot be a platform for rotational and planetary
orbital dynamics.

In current terms,this does not constitute systemic risk as the actual
core astronomical principles get highlighted with modern imaging and
technologies while exposing what went wrong and where,basically
mathematicians running amok with timekeeping averages while having no
interpretative instincts.The problem is not the unthinking majority
but the minority who can spot the problem and don't have the courage
to deal with something as straightforward as why a leap day rotation
is necessary.