Matthew Perdue wrote:
 
> Quoting Walter Murray <[log in to unmask]>:

>> In an earlier posting, I wondered aloud whether there were a rigorous
>> definition of the difference between two dates, in years, months, and
>> days.
>>
>> I did check ISO 8601, which is a standard for date representation.
It
>> did state one requirement to be met when expressing a time period in
>> years, months, and days:  months must not be greater than 11, and
days
>> must not be greater than 30.  That's all I could find.
>>
>> Walter

> Huh? Have I missed something here or did December and any months with
31 
> days just  cease to be able to be represented digitally according to
ISA 
> 8601?

Yes, I think you missed the part where I wrote "expressing a time period
in years, months, and days"!  We're talking about representing a period
of time, not a calendar date.

Walter  

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