We filed a Marriage Based Adjustment of Status petition with USCIS on December 5th, 2017 and received the final approval notices on March 9th, 2018:
USCIS Filing Date: December 5th, 2017
Received I-130 and I-485 Approval Notices on March 9th, 2018
Processing time from Filing with USCIS to Approval: 3 months, 4 days.
I-485: MSC-18-903-40058