waterml/src/main/java/ucar/nc2/ogc/gml/NcTimePositionType.java
public static TimePositionType initBeginPosition(
            TimePositionType beginPosition, CalendarDate date) throws IOException {
        // TEXT
            beginPosition.setStringValue(date.toString());

        return beginPosition;
    }
public static TimePositionType initBeginPosition(
            TimePositionType beginPosition, CalendarDate date) throws IOException {
        // TEXT
            beginPosition.setStringValue(date.toString());

        return beginPosition;
    }
wml2:Collection/wml2:observationMember/om:OM_Observation/om:phenomenonTime/gml:TimePeriod/gml:beginPosition