How long after verbal approval in I-485 interview were you officially approved?

I just had my I-485 interview today. It was pretty simple. They only reviewed my I-485 admissibility questions because the I-130 petition was already approved a year prior. Officer said that she will approve my case and congratulated us. I didn't ask how long it will take to see the approval. From your personal experience, how long does it take after a verbal approval?

Interview was at March 25th, 10am

API "lastedUpdatedTimestamp" updated to March 25th, 3pm

Case Status: Interview Was Scheduled

EDIT: Approved on March 27th 4pm!!!