To Sher:Looks like they assign the cases to IIO on the basis of EAC #.
EAC# 251 - 260 to offcier A
EAC# 261 - 270 to offcier B
EAC# 271 - 280 to offcier C
EAC# 281 - 290 to offcier D
So depends on the officer handling of(how fast or slow ) your case is taking that much time.
INS has never processed and won\'t process strictly on the basis of RD. It seems they look at EAC#, ND, RD, FP dates also .
Obviously they won\'t process December cases before July cases and at the same time they may not process July 1st cases strictly before July 30 cases.
Just my thoughts