The Cygnus supply ship left the International Space Station on Monday Nov 21, 2016 after delivering more than 5000 pounds of cargo and experiments, ready to start a week of standalone operations to include a groundbreaking microgravity fire experiment and deployment of four commercial weather monitoring Cubesats in orbit.
Cygnus was released from the Canadarm2 at 8:22 am EST completing a 29 day stay at the ISS.
Current ISS configuration post Cygnus OA-5 departure.
Next Cygnus OA-7 is scheduled for March 2017 via an Atlas V.
Source: Spaceflightnow.com
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