Gonna be 56 days for me tomorrow. They recieved my app and began the process on August 20. Says so on my initial review status.
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Application Filed - 8/16 Chicago Lockbox [Nebraska Service Center]
Date of I-797 C Notice of Action - 8/27
Date of Biometrics Appointment - 9/24
Date of Approval of Applications - 12/14
Date of EAD - 12/20