Output from DanC's prog:

<DanCon> ical2rdf.pl get this [[
<DanCon>   <Vevent>
<DanCon>     <dtstart rdf:parseType='Resource'>
<DanCon>       <dateTime>2002-12-01T19:00:00</dateTime>
<DanCon>     </dtstart>
<DanCon>     <dtend rdf:parseType='Resource'>
<DanCon>       <dateTime>2002-12-01T21:00:00</dateTime>
<DanCon>     </dtend>
<DanCon>     <rrule rdf:parseType='Resource'>
<DanCon>       <freq>WEEKLY</freq>
<DanCon>       <byday>MO,TU,WE,TH,FR</byday>
<DanCon>     </rrule>
<DanCon>   </Vevent>
<

Excerpt from out Users.n3 file:

homenet:PlayTimes a ical:Vcalendar ;
    user:rangeName          "PlayTimes" ;
    rdfs:label              "Times that non-work access is allowed" ;
    ical:hasEvent
      [ a ical:Vevent ;
        ical:dtstart
          [ a ical:Vtime ;
            rdf:value       "T084500" ] ;
        ical:dtend
          [ a ical:Vtime ;
            rdf:value       "T101500" ] ;
        ical:rrule
          [ a ical:Vrecur ;
            ical:freq       "WEEKLY" ;
            ical:interval   "1" ;
            ical:byday      "MO,TU,WE,TH,FR" ]
      ] ;
    ical:hasEvent
      [ a ical:Vevent ;
        ical:dtstart
          [ a ical:Vtime ;
            rdf:value       "T160000" ] ;
        ical:dtend
          [ a ical:Vtime ;
            rdf:value       "T164500" ] ;
        ical:rrule
          [ a ical:Vrecur ;
            ical:freq       "WEEKLY" ;
            ical:interval   "1" ;
            ical:byday      "MO,TU,WE,TH,FR" ]
      ] ;
    ical:hasEvent
      [ a ical:Vevent ;
        ical:dtstart
          [ a ical:Vtime ;
            rdf:value       "T200000" ] ;
        ical:dtend
          [ a ical:Vtime ;
            rdf:value       "T220000" ] ;
        ical:rrule
          [ a ical:Vrecur ;
            ical:freq       "WEEKLY" ;
            ical:interval   "1" ;
            ical:byday      "MO,TU,WE,TH,FR" ]
      ] ;
    ical:hasEvent
      [ a ical:Vevent ;
        ical:dtstart
          [ a ical:Vtime ;
            rdf:value       "T084500" ] ;
        ical:dtend
          [ a ical:Vtime ;
            rdf:value       "T111500" ] ;
        ical:rrule
          [ a ical:Vrecur ;
            ical:freq       "WEEKLY" ;
            ical:interval   "1" ;
            ical:byday      "SA,SU" ]
      ] ;
    ical:hasEvent
      [ a ical:Vevent ;
        ical:dtstart
          [ a ical:Vtime ;
            rdf:value       "T160000" ] ;
        ical:dtend
          [ a ical:Vtime ;
            rdf:value       "T220000" ] ;
        ical:rrule
          [ a ical:Vrecur ;
            ical:freq       "WEEKLY" ;
            ical:interval   "1" ;
            ical:byday      "SA,SU" ]
      ] ;
    rdfs:comment
        """
        Designated play times:
          weekdays: 08:45-10:15, 16:00-16:45, 20:00-22:00
          weekends: 08:45-11:15, 16:00-22:00
        """ .