New Delhi: Aam Aadmi Party (AAP) convener Arvind Kejriwal will be sworn-in as Delhi's seventh Chief Minister on December 28 at the historic Ramlila Maidan, officials said on Wednesday. br br The date for the oath-taking ceremony for Kejriwal and his cabinet ministers was finalised after meeting with Chief Secretary DM Spolia and is expected to take place at 12 pm on Saturday.