[LEAPSECS] Schedule for success

[Poul-Henning Kamp]

In message <1230738511.495b944f91ce3 at webmail.unb.ca>, "Richard B. Langley" writes:

>Quoting Poul-Henning Kamp <phk at phk.freebsd.dk>:

>

>> And since WGS84 is not rigidly linked to ITRS, doesn't that mean

>> that in order to use DUT1 broadcasts to point a telescope (precisely[1])

>> you also need to the ITRS/WGS84 difference at your place ?

>> 

>> Has anybody calculated what the worst case DUT1 difference is in

>> the WGS84 datum ?

>

>The current version of WGS84 differs from the current version of ITRF by only a few

>centimetres. WGS84 was purposely updated to agree as closely as possibly with ITRF.


But it is not guaranteed to keep close, is it ?

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.