For all of us who wonder when the best time to workout is, here is an article that can help.  It tackles a lot of the common misconceptions with workout timing and other important issues as well.  I think you will certainly enjoy this; however, make sure to not misinterprate this to mean that if you cannot workout at the desired times then you shouldn't workout at all.  At the end of the day the most important factor in good health and fitness is that you are active!

http://health.msn.com/fitness/articlepage.aspx?cp-documentid=100219394