date after which i am eligible to apply for ILR

i dont know if i am stuck but when i rang the home office and i told them i landed in UK on 30th jume 2005 but apparently it was 1st of july 2005.I have got the appointment at sheffieldPEO on 3rd june 2010.pls can anyone tell me whether its in that 28days threshold.should i ring back home office and tell them as well.
many thanks for looking.

Try counting back 28 days from the 1st July.