The Free the Context Area Used When Formatting Dates and Times
    for Input or Output routine frees the virtual memory associated
    with the context area used by the date/time input and output
    formatting routines.

    Format

      LIB$FREE_DATE_TIME_CONTEXT  [user-context]

1  –  Returns

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value

2  –  Argument

 user-context

    OpenVMS usage:context
    type:         longword (unsigned)
    access:       modify
    mechanism:    by reference

    User context that retains the translation context over multiple
    calls to the date/time input and output formatting routines.
    The user-context argument is the address of an unsigned longword
    that contains this context. If the user-context argument was not
    specified in the call to LIB$FORMAT_DATE_TIME, LIB$CONVERT_DATE_
    STRING, or LIB$GET_MAXIMUM_DATE_LENGTH, then no argument should
    be supplied when calling this routine.