[LEAPSECS] Bong
Brooks Harris
brooks at edlmax.com
Tue Jun 30 20:27:48 EDT 2015
I synced my Windows 7 using my own SNTP implementation about two minutes
before 8PM New York (Eastern Daylight Time). The SNTP data reported the
Windows within 0.0004 of the NTP - pretty good! I watched the Windows
clock carefully. It counted up 8:00:56, 57, 58, 59 as expected with a
nice one second tick, then rolled to 8:00:00. Then, after the Leap
Second, the SNTP reports Windows v.s. NTP -0.9999900 secs. Then I
re-synced the Windows - now -0.0000018. So, the Windows did NOT count
the Leap Second on its own until after the NTP update, as expected.
Meantime, on the desk I had an Android smart phone (Samsung), set to
"automatic from network". It rolled to 8:00 at the nearly the same time
as near as I could judge. Meantime the Time Warner cable settop box
clock also rolled to 8:00 at the same time as near as I could judge.
After the Leap Second and updating the Windows, the Windows and the
Android roll on the minute together, near as I can judge - seems the
CELL network applied the Leap Second. The cable box seems to be updating
one second late so far (twenty minutes after 8:00PM).
Not very scientific, but the Windows and personal clocks seemed to have
worked more or less without the galaxy collapsing..
-Brooks
On 2015-06-30 07:03 PM, Tony Finch wrote:
> Just heard the midnight (+0100) chimes from Big Ben on Radio 4 FM. The
> bong was one second late, so I gather they already applied the leap
> second. Or my DAB radio also buffers horribly even in FM mode...
>
> Tony.
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