Re: [LEAPSECS] Look before you don't leap

2015-05-20 Thread Poul-Henning Kamp
In message , Rob Seaman writes: > Tell it to the folks who think they can hide the Sun in the cracks > between the timezones. You mean all the chinese people living up several hours away from mean solar time, because all of China is a single time-zone ? -- Poul-Henning Kamp | UNI

Re: [LEAPSECS] Look before you don't leap

2015-05-20 Thread Rob Seaman
On May 20, 2015, at 11:27 AM, G Ashton wrote: > I think calendars count observed day/night cycles. They are not arbitrary day/night cycles. What has been observed is Earth has a sidereal rotation period; during its annual lap around the Sun one of those rotations is unwrapped. Hence the sola

Re: [LEAPSECS] Look before you don't leap

2015-05-20 Thread Poul-Henning Kamp
I'm absolutely certain that POSIX will survive much longer than the current definition of UTC. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can ade

Re: [LEAPSECS] Look before you don't leap

2015-05-20 Thread G Ashton
Rob Seaman wrote, in part, on 20 May 2015 11:27 AM >On the other hand the thing that calendars count are mean solar days. It is >precisely the “mean” part that permits calendars to sail unconcerned over >daylight saving time adjustments and to ignore the red herring of the equation >of time.

Re: [LEAPSECS] Look before you don't leap

2015-05-20 Thread Rob Seaman
On May 19, 2015, at 10:46 PM, Poul-Henning Kamp wrote: > In message <05e65caf-d064-4d4e-aa16-195fe7d15...@noao.edu>, Rob Seaman writes: > >> On the other hand, the one thing we can be sure about POSIX is >> that it will ultimately have a finite lifespan. But a day on Earth >> (and on Mars and P

Re: [LEAPSECS] Look Before You Leap – The Coming Leap Second and AWS | Hacker News

2015-05-20 Thread Poul-Henning Kamp
In message <05704fac-8087-42ca-bb03-51c4b21c6...@tcs.wap.org>, "Jonathan E. Har dis " writes: >I stand by my original statement. The label on the box is a mass specificati= >on, not a force specification. See the reference provided. I didn't say the label didn't describe a mass, I said

Re: [LEAPSECS] Look Before You Leap – The Coming Leap Second and AWS | Hacker News

2015-05-20 Thread Sanjeev Gupta
On Wed, May 20, 2015 at 3:02 AM, Richard Clark wrote: > One of its examples of how the "metric system" is > bad was its confusing use of two units, the newton and the kilogram, to > measure weight. The US system is so much simpler and sensible with just > one unit, the pound. > I am not sure of

Re: [LEAPSECS] Look before you don't leap

2015-05-20 Thread Sanjeev Gupta
On Wed, May 20, 2015 at 9:28 PM, Joseph Gwinn wrote: > The rationale is that by the time we get to 2038, all platforms will > have changed time_t to a 64-bit integer, deferring the problem for tens > of billions of years, by which time POSIX will be in museums, laughed > at by bored children. Th

Re: [LEAPSECS] Look before you don't leap

2015-05-20 Thread Joseph Gwinn
On Tue, 19 May 2015 22:02:18 -0700, Rob Seaman wrote: > On May 19, 2015, at 1:39 PM, Joseph M Gwinn wrote: > >> In short, POSIX systems have to be able to work in a cave, with no >> access to the sky or knowledge of astronomy. > > If the cave has access to NTP it has access to the IERS. Not ne

Re: [LEAPSECS] Look Before You Leap – The Coming Leap Second and AWS | Hacker News

2015-05-20 Thread Jonathan E. Hardis
I stand by my original statement. The label on the box is a mass specification, not a force specification. See the reference provided. If you want to pick at the statement you would have to resort to relativity, in which case I would correct to "rest mass." Sent from my iPad > On May 20, 2015