Operating systems of the 1970s handling dates beyond the year 2000

John Kaur digitgraph at gmail.com
Sun Jan 18 21:30:33 CST 2015

Believe is you use 1972, that is the folding point for the calendar to get
weeks and months correct.
Older versions of RSTS did not do it past about mid 2000.

On Sun, Jan 18, 2015 at 6:07 PM, Johnny Billquist <bqt at update.uu.se> wrote:

> On 2015-01-19 02:04, Mark Longridge wrote:
>> After trying to get Unix v5 to understand dates beyond the year 2000 I
>> had to wonder if any of the older operating systems from the 1970s or
>> older could do this.
>> So, did any operating system programmers from this time period have
>> the foresight to use 4 digits for the year? I just checked APL/360 and
>> it seems that it does not.
> TOPS-20? VMS?
> Actually RSX internally also handles it fine, but there were bugs in
> various code that displayed dates, that assumed that the year would never
> go beyond 99. :-)
>         Johnny
> --
> Johnny Billquist                  || "I'm on a bus
>                                   ||  on a psychedelic trip
> email: bqt at softjar.se             ||  Reading murder books
> pdp is alive!                     ||  tryin' to stay hip" - B. Idol

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