[UR-WG] Comment on duration format for WallDuration and CpuDuration

[Thomas Soddemann]

Hi folks,

ISO8601 allows to set the start date for a given period like in
2005-08-09T18:31:42P6M4DT12H30M17S
which are 5 months, 4 days, 12hours 30 minutes and 17 seconds after 
2005-08-09 18:31:42.
So in principle there is no problem with using the ISO format.

Personally, I prefer not to put any restriction on the ISO format. Only 
the timezone and hence the possible existence of daylight saving periods 
have to be known. E.g., in DEISA we are using UTC.

Besides, ISO8601 is an official way to express date/time and time 
periods in the European Union (EN 28601) and Switzerland.

Cheers,
Thomas

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