[time-nuts] [LEAPSECS] Leap second to be introduced at midnight UTC December 31 this year
bownes at gmail.com
Mon Jul 25 18:03:50 EDT 2016
We've been dealing with speed of light issues for over 20 years in the financial world. And telecom.
Someone recently built a new fiber route from Chicago to NY because it was just a touch shorter. The distances are down to hundredths of a ms.
> On Jul 25, 2016, at 17:41, Bob Camp <kb8tq at n1k.org> wrote:
> In these days of computers trading with computers, the whole issue of “who did what when” can
> result in major money trading hands. I’m sure that at some point the financial markets will have to
> deal with light speed issues and geography if they have not already.
>> On Jul 25, 2016, at 4:57 PM, Mark Sims <holrum at hotmail.com> wrote:
>> Apple's new file system timestamps files with nanosecond resolution. A lot of Linux file systems also do that now. The nanosecond ain't what it used to be... I can imagine people wanting picosecond timestamps in the near future. Who knows, maybe we'll have something like NTP compensating for light-speed delay for the gap between the read/write heads and disk surface (assuming we still use heads and surfaces) ; -)
>> Except that you still have the issue of “what time did this file get changed”. To most of us, that’s not really a big deal. A second either way … who cares.
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