"Result of date type attributes in Write Excel operator"

Dear all,

I was wondering about the result of the "write excel" operator. When feeding dates (without time) into it the excel file contains the same date (not surprising so far) but with an additional time which seems to vary randomly all over the day.

??? ??? ???

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<process version="5.2.003">
  <context>
    <input/>
    <output/>
    <macros/>
  </context>
  <operator activated="true" class="process" compatibility="5.2.003" expanded="true" name="Process">
    <process expanded="true" height="235" width="279">
      <operator activated="true" class="generate_sales_data" compatibility="5.2.003" expanded="true" height="60" name="Generate Sales Data" width="90" x="45" y="30"/>
      <operator activated="true" class="write_excel" compatibility="5.2.003" expanded="true" height="76" name="Write Excel" width="90" x="179" y="30">
        <parameter key="excel_file" value="c:\test.xls"/>
      </operator>
      <connect from_op="Generate Sales Data" from_port="output" to_op="Write Excel" to_port="input"/>
      <portSpacing port="source_input 1" spacing="0"/>
      <portSpacing port="sink_result 1" spacing="0"/>
    </process>
  </operator>
</process>

Sincerely
Sachs