[LEAPSECS] happy anniversary pips

[Ian Batten]

On 5 Feb 2014, at 23:50, Richard Clark <rclark at noao.edu> wrote:


> I'm surprised that someone on the list hasn't already pointed this out.

> 

> Today February 5 2014 (already yesterday in much of the world) marks

> the 90th anniversary of the BBC's time pips as we know them.


All the coverage again points out that the "Greenwich" time signal is in fact a melange of 
UTC(GPS), UTC(NPL) and the BBC's own atomic clocks, rather than GMT (ie UT1).
Another indicator that although UK legal time is UT1, in practice not only
does everyone use UTC, but sources of UT1 with better than 100ms resolution
are difficult to access in real time (MSF only carries DUT1 to 100ms).

ian