Priority Date

“Priority Date” determines your place in the queue for waiting for green card in the categories where there is a wait. When the govt. has reached your PD, it is said to be “current.” For family-based green cards, PD is the date your I-130 was filed; for PERM-based cases, the date your PERM was filed; for employment-based cases other than through PERM (like EB-1 cases), PD is the date your I-140 was filed. DOS publishes the movement of the PD queue every month in the Visa Bulletin: http://www.immigration.com/visa-bulletin