Soak the uncooked white rice and the cinnamon stick in 4 C. of milk 6-8 hours if not overnight.
Transfer the rice, cinnamon stick, milk and dates to the blender and blend for 1 1/2 - 2 minutes until finely mixed.
Pour the blended liquid into your jug through a fine mesh strainer. Add the pulp from the strainer back to the blender with the additional 4 C. milk - blend again, for 30 seconds to 1 minute.
Pour that mixture through the strainer into your jug, and give the mixture in the jug a good stir.
One last time, take the pulp from the strainer and re-add back to the blender along with 2 C. of liquid from the jug for 30 seconds to 1 minute - then strain one last time into the jug.
May need to shake or stir before serving. Serve in glasses over ice.