What is the difference between the date of submission and the date of adjudication in the US immigration timetable?

Starting from 20 15 and 10, there will be two forms in the immigration schedule of the United States, namely, Table A "Date of Final Action of Application" and Table B "Date of Submission of Application".

Date of submission: DFA, "Date of submission of application".

Decision date: FAD, the final approval date of immigrant visa (immigration plan) (the final action date of application).

Difference:

Table A in the timetable shows whether you can finally get a green card after review, and table B shows the time when you can submit an application for review. You can change jobs in the middle, and your family can get employment and other benefits.