[LEAPSECS] Bloomberg announced its smear

Tony Finch dot at dotat.at
Tue Sep 27 05:02:52 EDT 2016


Michael Shields via LEAPSECS <leapsecs at leapsecond.com> wrote:
>
> We used the cosine smear only for leap 34.  The smears for leaps 35
> and 36 were linear
> (https://cloudplatform.googleblog.com/2015/05/Got-a-second-A-leap-second-that-is-Be-ready-for-June-30th.html).
>
> The linear smear deals with the leap by having only two frequency
> changes (instead of an infinite number), so it's admirably simple.

So, if everyone who is smearing is doing so piecewise-linear, it seems
there is a great opportunity for them to get together and choose a
consensus set of smear parameters.

Amazon    -12h +12h [0]
Bloomberg -0   +2ks [2]
Google    -10h +10h
QTnet -"about 2 hours" +0 [1]
UTC-SLS   -1ks +0

Any others?

[0] https://aws.amazon.com/blogs/aws/look-before-you-leap-the-coming-leap-second-and-aws/
[1] http://www.slideshare.net/apnic/the-leap-second-is-coming-by-tomonori-takada-apricot-2015
[2] https://data.bloomberglp.com/professional/sites/4/Bloomberg-Leap-Second_December-2016.pdf

Tony.
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