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

Johnny Billquist bqt at update.uu.se
Mon Jan 19 07:04:47 CST 2015

On 2015-01-19 04:51, J. David Bryan wrote:
> On Sunday, January 18, 2015 at 20:04, Mark Longridge wrote:
>> So, did any operating system programmers from this time period have
>> the foresight to use 4 digits for the year?
> It's just outside of your time frame (circa 1980), but the HP 64000
> operating system allowed years up to 2157 (dates were stored as the number
> of days since January 1, 1976) and accepted years of either two or four
> digits.  Unusually for an American product, it required dates to be entered
> in D/M/Y format.

I think pretty much all DEC OSes normally used dd-mmm-yy, but some of 
them could accept input in various format.


Johnny Billquist                  || "I'm on a bus
                                   ||  on a psychedelic trip
email: bqt at softjar.se             ||  Reading murder books
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