[LEAPSECS] "China move could call time on GMT"

[Warner Losh]

On Jan 6, 2012, at 11:53 AM, Poul-Henning Kamp wrote:

> In message <2B82F82A-C0C6-4697-BC05-DF3FDA13CC4E at noao.edu>, Rob Seaman writes:

> 

>> And then UTC-9, UTC-10, etc., decade after decade.

> 

> Somebody from approximately 8000 years in the future just landed

> their time-machine in my living-room and asked me to relay: "Tell

> my 320-times-great-granddad that he can save himself a lot of time

> by not trying to outguess how we will deal with timezones by the

> time DUT1 amounts to an hour per decade."


The US has changed its DST rules in 1918, 1942, 1967, 1973, 1987 and 2007. So on the average every 15 years over the last century.  For the next thousand years, we'll need one or two adjustments.  Seems like the political will to keep DST the same is relatively weak on that time scale.

Warner