michael.deckers via LEAPSECS wrote:
On 2015-03-03 21:05, Martin Burnicki wrote about
negative leap seconds:
In the 7 year interval where no leap second was required/scheduled I
heard
several people saying we might have needed a negative leap second.
Fortunately, this is not a matter of speculation.
I know.
An easy way to
see the trend of UT1 - UTC is to look at DUT1 (published in
Bulletin D). DUT1 is an approximation to UT1 - UTC and has
always stepped down (except, of course, at positive leap seconds),
ever since the earliest Bulletin D available on the web (1991-06-20).
Yes, but if you observe that DUT1 steps down slower and slower you can
speculate whether it would start to step up over some years.
Before a negative leap seconds would be scheduled, we would see
DUT1 stepping up several times in a row, so there _is_ some
advance warning.
Agreed.
Martin
--
Martin Burnicki
Senior Software Engineer
MEINBERG Funkuhren GmbH & Co. KG
Email: [email protected]
Phone: +49 (0)5281 9309-14
Fax: +49 (0)5281 9309-30
Lange Wand 9, 31812 Bad Pyrmont, Germany
Amtsgericht Hannover 17HRA 100322
Geschäftsführer/Managing Directors: Günter Meinberg, Werner Meinberg,
Andre Hartmann, Heiko Gerstung
Web: http://www.meinberg.de
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