Access Form Calculate on 2 textboxes the hours of the day difference: 8:00 am 10:07 am need to know difference in hours minutes

StartTime = #8:00 AM#
StopTime = #10:07 AM#
Difference = FormatHourMinute(StopTime - StartTime)
? Difference
2:07

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Public Function FormatHourMinute( _
  ByVal datTime As Date, _
  Optional ByVal strSeparator As String = ":") _
  As String
  
' Returns count of days, hours and minutes of datTime
' converted to hours and minutes as a formatted string
' with an optional choice of time separator.
'
' Example:
'   datTime: #10:03# + #20:01#
'   returns: 30:04
'
' 2005-02-05. Cactus Data ApS, CPH.

  Dim strHour       As String
  Dim strMinute     As String
  Dim strHourMinute As String
  
  strHour = CStr(Fix(datTime) * 24 + Hour(datTime))
  ' Add leading zero to minute count when needed.
  strMinute = Right("0" & CStr(Minute(datTime)), 2)
  strHourMinute = strHour & strSeparator & strMinute
  
  FormatHourMinute = strHourMinute
  
End Function

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