[LEAPSECS] Bloomberg announced its smear

[Brooks Harris]

Hmmm. You wonder why they chose 2000 seconds, which gives a nice round 
number of seconds for the duration: 2000/60=3.3... :-|

So, now there are at least 3 different smears in use by major providers 
to "hide" the Leap Second from downstream systems that might be upset by 
it. This produces indeterminate timestamps for the duration of their smears:

Two of them smear for 24 hours, 12 hours either side of the Leap Second 
midnight, but their increments don't match -

Look Before You Leap – The Coming Leap Second and AWS (Updated)
https://aws.amazon.com/blogs/aws/look-before-you-leap-the-coming-leap-second-and-aws/

Google Leap Smear 2015
https://mlichvar.fedorapeople.org/leap2015/google_smear.png

Now Bloomberg is smearing for 2000 seconds (or is it 2001 seconds?).

Bloomberg will smear over 2000 seconds after the leap.
https://data.bloomberglp.com/professional/sites/4/Bloomberg-Leap-Second_December-2016.pdf

Meantime Microsoft avoids a smear altogether by diverging from the 
common practice of introducing Leap Seconds on local timescales 
simultaneous with UTC and instead introducing the Leap Second at (the 
second before) midnight in each local zone. This results in integral 
second increments and a symmetrical distribution the Leap Second 
discontinuity across the local YMDhms representations.

The time on Microsoft Azure will be: Different by a second, everywhere
http://www.theregister.co.uk/2015/05/29/windows_azure_second_out_of_sync/

-Brooks


On 2016-09-23 10:45 AM, Steve Allen wrote:
> Bloomberg will smear over 2000 seconds after the leap.
> https://data.bloomberglp.com/professional/sites/4/Bloomberg-Leap-Second_December-2016.pdf
>
> They are one of many cloud and financial operations who have,
> ironically, decided that the non-precision timekeeping through the 1960s
> (and of POSIX) is preferable to the precise time choice made by the CCIR.
>
> --
> Steve Allen                    <sla at ucolick.org>              WGS-84 (GPS)
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