The first two satellites (RAIKO, WE WISH) will be deployed around 15:10 – 15:20 UTC manually by astronaut Akihiko Hoshide. Three other satellites (FITSAT-1, NanoRacks,and TechEdSat) will be deployed around 16:30 – 16:40 UTC by the robotic arm.
JAXA will broadcast the deployment: http://iss.jaxa.jp/iss/jaxa_exp/hoshide/library/live/
thanks, JA6AVG and JE9PEL