In several months I expect tp file for US Citizenship. Like all contributors to this forum, I have been thru the USCIS 'wringer' and have learnt that forwarned is forarmed. In light of this, any information that is able to be provided as to the process that takes place following the application being submitted would be appreciated. In particular, what the terms 'Priority Date' and'Notice Date' refer to and the sequence of events that follow the NOA1.

Thanks

Notice date is the day they wrote the notice.

Priority date is the day your application is considered to have been received (that's usually, not always, the same as the actual 'received date'). So like if it says "contact us if you haven't heard anything in 300 days" that means 300 days after your priority date.

NOA-1
Biometrics at local ASC
Case transferred to district office
Interview at district office
Approval
Oath ceremony

Sometime between your biometrics and approval, your FBI check will be returned. If it's already been returned when you have the interview, you can be approved at interview, otherwise you have to wait for the name check to come back before you can be approved.

How long passes between approval and oath varies by district office. Some places swear you in right there and then, some places have one ceremony a day, one a week, one a month, one every few months ...