April 6: We recommended that your Form N-400, Application for Naturalization, be approved. Your case was submitted for quality review. April 11: Your Form N-400, Application for Naturalization, was placed in line for oath ceremony scheduling. Also April 11: Oath Ceremony Notice Was Mailed. Oath ceremony will be May 12, two days from now. So from time of being placed in line for ceremony to date of ceremony: 31 days.