From: erlo.haugen@gmail.com
Cc: mailbox@dmitry-kazakov.de
Subject: Re: Ada.Calendar and NTP (and Unix Epoch)
Date: Tue, 24 Jul 2012 01:34:03 -0700 (PDT)
Date: 2012-07-24T01:34:03-07:00 [thread overview]
Message-ID: <4b3daad0-b884-4f42-9aa5-891bcfeadf87@googlegroups.com> (raw)
In-Reply-To: <4l5t6lhzgquo$.qa4ud3ssphtd.dlg@40tude.net>
> Political time is one regulated by politicians, localized, daylight saving
> etc. Political time is unusable for the purpose of time stamping and clock
> synchronization, but of course indispensable for the UI.
>
> Ada.Calendar implicitly represents such a time. NTP, I only guess, because
> we are using other mechanisms of time distribution and synchronization, is
> not a political time. Is it UTC?
>
> Which is why I second to Adam asking what are going to achieve.
>
> --
> Regards,
> Dmitry A. Kazakov
> http://www.dmitry-kazakov.de
I see. NTP is just the number of seconds (and fractions thereof) from 1-1-1900 0:00, adjusted with leap seconds - so it is not adjusted for timezones, daylight saving. It is not UTC, as UTC does not take leap seconds in account.
The purpose of this exercise is to compare two timestamps, one base on Unix epoch and one based on NTP epoch.
Regards
Erlo
next prev parent reply other threads:[~2012-07-26 14:53 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-23 21:42 Ada.Calendar and NTP (and Unix Epoch) erlo
2012-07-23 22:07 ` Adam Beneschan
[not found] ` <5s8s08lv6dj1i4tkb99roq9roifsgr44vd@invalid.netcom.com>
2012-07-24 7:11 ` Dmitry A. Kazakov
2012-07-24 7:50 ` erlo.haugen
2012-07-24 8:14 ` Dmitry A. Kazakov
2012-07-24 8:34 ` erlo.haugen [this message]
2012-07-24 9:13 ` Dmitry A. Kazakov
2012-07-24 12:27 ` erlo.haugen
2012-07-24 13:02 ` Dmitry A. Kazakov
2012-07-24 14:10 ` erlo
2012-07-24 16:37 ` Adam Beneschan
2012-07-24 7:24 ` erlo.haugen
2012-07-24 16:26 ` Adam Beneschan
2012-07-24 18:28 ` Dmitry A. Kazakov
2012-07-24 19:07 ` Adam Beneschan
2012-07-24 20:17 ` Dmitry A. Kazakov
2012-07-24 19:43 ` Vasiliy Molostov
2012-07-24 20:29 ` Dmitry A. Kazakov
2012-07-24 21:22 ` Vasiliy Molostov
2012-07-25 6:32 ` Dmitry A. Kazakov
2012-07-25 7:04 ` Vasiliy Molostov
2012-07-25 7:33 ` Dmitry A. Kazakov
2012-07-25 8:05 ` Vasiliy Molostov
2012-07-25 8:30 ` Dmitry A. Kazakov
2012-07-25 8:45 ` Vasiliy Molostov
2012-07-25 9:30 ` Dmitry A. Kazakov
2012-07-24 20:33 ` Simon Wright
2012-07-25 10:14 ` Simon Wright
2012-07-25 13:16 ` Dmitry A. Kazakov
2012-07-24 7:37 ` erlo.haugen
2012-07-24 11:34 ` Simon Wright
2012-07-24 11:59 ` Nasser M. Abbasi
2012-07-24 15:08 ` Simon Wright
2012-07-24 16:59 ` Georg Bauhaus
2012-07-24 19:25 ` Simon Wright
2012-07-24 22:07 ` Georg Bauhaus
2012-07-24 19:17 ` John B. Matthews
2012-07-25 2:23 ` sla29970
2012-07-25 6:40 ` Dmitry A. Kazakov
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