CalendarMirror is software that syncs the Outlook calendar with Google Calendar. From there, the Android can automatically sync its calendar with Google Calendar.
Something to consider is that there is very little documentation on their website concerning this product. There is even less technical support mentioned. However, when installing their product, the readme file mentions that you can email support@ livepim.com for help. Even though there is no installation guide, installation is simple. There is a 10 day trial, so you can try it before you purchase it. You can find a link to CalendarMirror here: