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Article #558Re: Clock base (was Re: Class project and question)
From: D89.JOHNNY... Johnny Billquist
Date: Sun, 24 Dec 1989 23:46
Date: Sun, 24 Dec 1989 23:46
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> Question: anyone know why the VMS system has a clock that starts about > November 15 in the late 1800's? Sure, that's when we converted to the Gregorian time table (I think that was his name). I believe that that was the time when we last had to fiddle with the time, to keep it up with reality, so you can not compute days and such stuff correctly before that time. Actually I think it was only one hour that got lost in that tweaking. Most systems don't bother with times so long ago, but VMS actually keeps track of how many tenths of microseconds that has passed since that time. It is really quite a neat way of keeping time, since the Clock routines just has to increment one word all the time. However, making the conversion routines to get the right date is a bit worse... I guess that's why many software designers decide to do it another way.
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Path: mbox-mo1.pugleaf.net!gmdzi!unido!mcsun!sunic!bmc!kuling!aida.csd.uu.se!d89.johnny-billquist From: D89.JOHNNY...@AIDA.CSD.UU.SE (Johnny Billquist) Newsgroups: alt.folklore.computers Subject: Re: Clock base (was Re: Class project and question) Message-ID: <12552763069016@AIDA.CSD.UU.SE> Date: 24 Dec 89 23:46:59 GMT References: <1534@speedy.mcnc.org> Sender: news@kuling.UUCP Lines: 19 Posted: Mon Dec 25 00:46:59 1989 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit