[LEAPSECS] Leap second relationship to ISO 8601

[Rob Seaman]

On Aug 26, 2014, at 4:43 AM, Tony Finch <dot at dotat.at> wrote:

> Gerard Ashton <ashtongj at comcast.net> wrote:
> 
>> For example, if one wishes to use the format 2014-08-24, is it mandatory
>> that the day begin at midnight according to some unspecified local time?
> 
> ISO 8601 does not specify the time zone alignment of calendar days. It
> allows you to identify a date in the abstract without being specific about
> time of day, or to explicitly describe a 24 hour period using the interval
> representation.

A date is an integer.  A timestamp is a real.  (however represented)

>> If one wishes to specify the time, does the standard recommend 23:02Z over
>> 07:03, or are they on an equal footing?
> 
> Those are different things. A time without a UTC designator or UTC
> difference is a local time in an unspecified time zone.

Though the timezone might be implicit in your application.  ISO 8601 is not particularly friendly to 12-hour clock time, if that was what you were asking.

Rob