<time> indicates the time in hours (<hour>), and minutes <minute>). This order must be kept.
If <time> is given, at least <hour> must be given, too. <minute> may be omitted.
<date>
(see also <generator>, or <sunk> e.g.)
<!-- here previous instructions -->
    <repetitiongroup>
        <dive>
            ...
            <!-- here information about the date -->
            <date>
                ...
            </date>
            <!-- 4:21 pm -->
            <time><hour>16</hour><minute>21</minute></time>
            <!-- here further instructions -->
            ...
        </dive>
        <!-- here instructions of more dives can appear -->
        ...
    </repetitiongroup>
<!-- here more instructions -->