SMIL 2.0 Scheduling Features

Hello,

We have 2 scheduling needs that do not appear to be covered in SMIL 2.0

Can anyone explain how to accomplish these requirements within the SMIL 2.0 specification? 

1) Our Scheduling Module creates many different SMIL schedule documents for our "Player"
    that are active throughout a month. Due to a high volume and complex business requirements, 
    it is not feasible to combine all of the different SMIL schedules created for a month into one SMIL 
    schedule. 

    How can we indicate the active date range and timeframe of each SMIL document?

    For example, SMIL schedule document #1 is active from 11/1 - 11/30, with a daily active timeframe 
    of 8:00 AM - 10:00 AM. Schedule #2 is active from 11/1 - 11/15, with a daily active timeframe of
    5:00 PM - 10:00 PM. Schedule #3 is active from 11/5 - 11/5, with a daily active timeframe of  
    10:00 AM - 12:00 PM.     

2)  Our Scheduling Module needs the ability to schedule a sequence of media elements and indicate
     the active timeframe of each element. Is this possible in SMIL? 
 
     For example, in the element sequence below, we need the ability to indicate that sm5v.jpg should only
     be played during 11/5 - 11/6.

      <img id="Logo" region="Image-1" src="Assets/euro/euro52x51.gif" dur="5s"/>
      <img id="Five" region="Image-1" src="Assets/euro/sm5v.jpg" dur="10s"/>
      <img id="Ten" region="Image-3" src="Assets/euro/sm10v.jpg" dur="10s"/>
      
 
Thanks.