Dates are showing up wrong

Hello

When I write the date 8.5.1999 with the following code the day today is written to the Database as 5.8.1999, but should be 8.5.1999 when I read back
I get 5.8.1999

After 12th each month then everything is ok, all dates then are written as dd.mm.yyyy

If bIsStoring Then
oRec!PatientGUID = m_sPatientGUID
oRec!StudyTypeID = m_lStudyTypeID
oRec!Date = m_dtDate
oRec!Time = m_dtTime
oRec!RoomID = m_lRoomID
oRec!FacilityID = m_lFacilityID
oRec!Status = m_lStatus
oRec!StudyID = m_lStudyID
Else
m_sPatientGUID = oRec!PatientGUID
m_lStudyTypeID = oRec!StudyTypeID
m_dtDate = oRec!Date
m_dtTime = oRec!Time
m_lRoomID = oRec!RoomID
m_lFacilityID = oRec!FacilityID
m_lStatus = oRec!Status
m_lStudyID = oRec!StudyID
End If

Has anyone had similar problems ??

Thanks