(1)If you are in NIW catetory,your PD is the date USCIS receive you I-140
(2)If you are in EB3 or EB2 category,your PD is the date USCIS receive you PERM
(3)If you are dependent,your LD PD is your PD
(2)If you are in EB3 or EB2 category,your PD is the date USCIS receive you PERM
(3)If you are dependent,your LD PD is your PD