Re: Upcoming time boundary events

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Sujet : Re: Upcoming time boundary events
De : arne (at) *nospam* vajhoej.dk (Arne Vajhøj)
Groupes : comp.os.vms
Date : 19. May 2025, 20:19:57
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <100g08t$1oqob$1@dont-email.me>
References : 1
User-Agent : Mozilla Thunderbird
On 5/19/2025 1:18 PM, Simon Clubley wrote:
I realised that today is exactly 28 years since the 10,000 day
issue in VMS. I am starting to feel old. :-(
 On a more serious note, I wonder what upcoming time boundaries
we are about to hit.
 The obvious one is 2038, but I also wonder how many had 2030 as
their Y2K pivot point.
 Any others you know of (both VMS and non-VMS) ?
30 years before 32 bit signed seconds since 1970 => 18-Jan-2008
10 years before 32 bit signed seconds since 1970 => 18-Jan-2028
32 bit signed seconds since 1970 => 18-Jan-2038
split 2 digits year to support 1950-2049 (*) => 01-Jan-2050
30 years before 32 bit unsigned seconds since 1970 => 07-Feb-2076
10 years before 32 bit unsigned seconds since 1970 => 07-Feb-2096
32 bit unsigned seconds since 1970 => 07-Feb-2106
everything is going to have issues at Y10K
all common 64 bit times should first break after Y10K (**)
*) Common in many databases, but it is usually configurable,
    so it can be changed to like 1970-2069 when needed.
**) But in order: Windows file time, VMS time, milliseconds
     since 1970, seconds since 1970.
Arne

Date Sujet#  Auteur
19 May18:18 * Upcoming time boundary events8Simon Clubley
19 May20:19 +* Re: Upcoming time boundary events4Arne Vajhøj
19 May21:48 i+* Re: Upcoming time boundary events2Chris Townley
19 May21:50 ii`- Re: Upcoming time boundary events1Chris Townley
20 May01:26 i`- Re: Upcoming time boundary events1Lawrence D'Oliveiro
23 May03:31 `* Re: Upcoming time boundary events3Stephen Hoffman
23 May19:11  `* Re: Upcoming time boundary events2Simon Clubley
23 May19:52   `- Re: Upcoming time boundary events1Robert A. Brooks

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