Use the FormatUserDate property to display date and time as you need. The FormatUserDate property has effect only if the FormatDate property is UserDate. Use the Caption property to retrieve the caption being displayed in the control's label. Use the SelDate or Value property to specify the date being displayed in the control's label. The AllowSpin property indicates whether the control displays a spin control to allow user changes the selected field using up or down arrows. Use the AllowCheckBox property to simulate as the browsed date is available or disable. 

The FormatUserDate property should be a combination of text and one or more of the followings indicators: 

• %m - indicates the month's number ( 1 to 12 )
• %mm - indicates the month's number, in two digits ( 01 to 12 )
• %M - indicates the month's name ( The MonthNames property indicates the name of the months )
• %M1 - indicates the first letter of the month's name
• %M2 - indicates the first two letters of the month's name
• %M3 - indicates the first three letters of the month's name
• %d - indicates the day number ( 1 to 31, depends on the month )
• %dd - indicates the day number, in two digits ( 01 to 31, depends on the month )
• %y - indicates the year number, 
• %w - indicates the day of the week
• %w1 - indicates the first letter of the day of the week
• %w2 - indicates the first two letters of the day of the week
• %w3 - indicates the first three letters of the day of the week
• %h - indicates the hour ( 1 to 12, if the %a is present, 0 to 23 if the %a is missing )
• %hh - indicates the hour in two digits ( 01 to 12, if the %a is present, 00 to 23 if the %a is missing )
• %n - indicates the minute ( 0 to 59 )
• %nn - indicates the minute in two digits ( 00 to 59 )
• %s - indicates the second ( 0 to 59 )
• %ss - indicates the second in two digits ( 00 to 59 )
• %a - indicates the AM/PM field. ( AM or PM ). Use the AMPM property to specifies the AM/PM indicates in %a fields.

The following VB sample displays date and time like: "12/31/1971 12:12:00 PM"

With CalendarCombo1
    .FormatDate = UserDate
    .FormatUserDate = "%m/%d/%y %hh:%nn:%ss %a"
End With

The following VB sample displays date like: "1971/12/31"

With CalendarCombo1
    .FormatDate = UserDate
    .FormatUserDate = "%y/%m/%d"
End With