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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Ada.Calendar and NTP (and Unix Epoch)
Date: Tue, 24 Jul 2012 12:34:49 +0100
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Date: 2012-07-24T12:34:49+01:00
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erlo <erlo@none> writes:

> This is because Ada.Calendar starts at 1-1-1901. But NTP starts at
> 1-1-1900, so how can I work my way around this issue? I need to
> compare NTP time with Unix Epoch based time.

I did it by (effectively) working backward from the next NTP epoch (I
treated NTP time as signed, so that the current NTP time is a negative
number), which according to the code I have here[1] is
2036-02-07:06:28:16 (this should fit with Unix time, but I just used
Ada).

[1]
http://coldframe.hg.sourceforge.net/hgweb/coldframe/adasntp/file/a6fd7b0dfeba/SNTP.impl/sntp_support.ads
http://coldframe.hg.sourceforge.net/hgweb/coldframe/adasntp/file/a6fd7b0dfeba/SNTP.impl/sntp_support.adb