In message <[email protected]>, central_bure
[email protected] writes:
>************************************************************************
>IERS Message No. 180 January 05, 2011
>************************************************************************
>
>Revision of IERS Earth Rotation Series effective 1 February 2011
>
>[...]
>
> 2) Changes in UT1-TAI and celestial pole offsets are respectively on
> the order of 2 s, 1, and 17 as which are at the level of the WRMS
> between IVS individual solutions.
TAI is supposed to be a "uniform atomic timescale", so I cannot
imagine they would have stuck/removed two seconds from it because
the figured out better params for Earth orientation.
Unless to reinforce that people should not use it for anything ?
Jumping UT1 by two seconds, would send DUT >1s, possibly >2s depending
on the signs.
The transition date is 2011-02-01.
I believe we should have seen Bul-C for 2011-06-31 already (six months
notice, remeber ?) but they usually run two weeks late.
So are we set for 4 months of DUT>1s or 4 months DUT>2s + 6 months
DUT>1s now ?
Can somebody explain this ?
Rationally ?
Poul-Henning
Not updated:
http://hpiers.obspm.fr/eop-pc/earthor/utc/TAI-UTC_tab.html
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
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