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 <s...@ucolick.org> WGS-84 (GPS)
UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855
1156 High Street Voice: +1 831 459 3046 Lng -122.06015
Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m
_______________________________________________
LEAPSECS mailing list
LEAPSECS@leapsecond.com
https://pairlist6.pair.net/mailman/listinfo/leapsecs
_______________________________________________
LEAPSECS mailing list
LEAPSECS@leapsecond.com
https://pairlist6.pair.net/mailman/listinfo/leapsecs
