Question: What date was the manufacturing company who developed the sounding rocket named Zenit-C renamed?
Sentence (from "Rheinmetall Air Defence"): Rheinmetall Air Defence AG is a division of German armament manufacturer Rheinmetall, created when the company's Oerlikon Contraves unit was renamed on 1 January 2009 and integrated with Rheinmetall's other air-defence products.
Relevant evidence: Yes