Travis & Nhi

Thank you guys for the info! We appreciate your time.

We've been married since 10/12/2019, we filed and our AOS was accepted and ready to be scheduled for an interview on 2/7/2020 but we haven't received an interview date yet. My question is simple but I can't find the answer. Does the 3 year clock to file N400 for naturalization start from the day we were married? The day her AOS was ready to be scheduled for interview? Or does it not start until she receives her Permanent Resident Card? I'm hoping it starts from our marriage date since the wait time for an interview can be as long as 35 months and if it takes more than 2 years to get her Permanent Resident Card they skip the conditional 2 year card and just send the 10 year card.

Thanks in advance.