The following example records the time of an event and constructs
    a single timestamp, which includes the time of the event. Note
    that the utc_getusertime routine is called so the time zone
    information that is included in the timestamp references the
    user's environment rather than the system's default time zone.

    OpenVMS systems do not have a default time zone rule. You
    select a time zone by defining sys$timezone_rule during the
    sys$manager:net$configure.com procedure, or by explicitly
    defining sys$timezone_rule.

    utc_t               before, after, evnt;

    /*
     *   Get the time before the event...
     */

    utc_getusertime(&before);  /* Out: Before binary timestamp     */

    /*
     *   Get the time after the event...
     */

    utc_getusertime(&after);   /* Out: After binary timestamp      */

    /*
     *   Construct a single timestamp that describes the time of the
     *   event...
     */

    utc_boundtime(&evnt,   /* Out: Timestamp that bounds event */
                  &before, /* In:  Before binary timestamp     */
                  &after); /* In:  After binary timestamp      */