validation of time datatype

Hello all,
does the element 
<myTime xsi:type="xs:time">10:23</myTime>
validate or is it necessary to write
<myTime xsi:type="xs:time">10:23:00.000</myTime>
?
The more general question is which part of the ISO8601 standard
is relevant for time and dataTime datatypes?

Walter Waterfeld
R&D
Software AG

Received on Thursday, 1 November 2001 12:04:56 UTC