startdate=start date of the dive trip — compulsory
enddate=end date of the dive trip — compulsory
Via <dateoftrip> the date of beginning and end of a dive trip is given. Both values are given as attributes.
Start date, and end date of the interval are given corresponding to the conventions of the International Organization for Standardization (ISO), ISO 8601 (see also for example http://en.wikipedia.org/wiki/ISO_8601, and http://de.wikipedia.org/wiki/ISO_8601). No duration indications are allowed here.
For further illustration see <datetime>.
see also <trip>
<!-- begin of trip on Sunday, May 11th, 2008, end on Saturday, May 31st, 2008 - duration 21 days --> <dateoftrip startdate ="2008-05-11" enddate="2008-05-31"/>
<!-- in this case the time of arrival (15:30 hours) is given, too --> <dateoftrip startdate ="2008-05-11" enddate="2008-05-31T15:30:00Z"/>