[LEAPSECS] Bloomberg announced its smear
scolebourne at joda.org
Sat Sep 24 06:46:09 EDT 2016
On 23 September 2016 at 19:35, Brooks Harris <brooks at edlmax.com> wrote:
> 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.
As I've been saying for years, what we need (desperately) is a
standard for smearing, aka 86400 subdivision days. My preference is
UTC-SLS, but I don't really care so long as it is an agreed standard.
I know that many find smearing offensive, but its timet o move on and
get the standard written.
> 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)
> Google Leap Smear 2015
> Now Bloomberg is smearing for 2000 seconds (or is it 2001 seconds?).
> Bloomberg will smear over 2000 seconds after the leap.
> 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
> On 2016-09-23 10:45 AM, Steve Allen wrote:
>> Bloomberg will smear over 2000 seconds after the leap.
>> 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)
>> UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat
>> 1156 High Street Voice: +1 831 459 3046 Lng
>> Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m
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>> LEAPSECS at leapsecond.com
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