Don't know John that's what I'm trying to find out. I was told it is 90 days by the London Embassy this morning. One of the gals here who has already gone through the procedure with her spouse tells me differently. I will know tomorrow and will post the reponse that I receive from the embassy. Perhaps there are different timeframes for different visa :-/
Well here's the response from the embassy John. And as for my nifty friend Andy - shame, shame on you!!!!
Once an immigrant visa is issued you must travel to the U.S. to make your first entry within 6 months of the date of issuance.
Thank you for your email correspondence.
Consular Information Unit
U.S. Embassy London
CONS/CIU/GMS
This informal method of responding enables us to respond to you within a shorter time. No record is being made of this correspondence. If you need to email us again, please return this email.
THANKS LEAH!!! ***for everything*** You are an angel to me especially in the early and some of darkest days of living here. You always knew when I needed to chat and always took the time out to send me a PM to see how I was doing.. You were the first friend (virtual or not virtual, doesn't matter.. a friend is a friend) I actually made here in London when I think about it (and it took the UKY Bar-B-Q to actually meet)
Know that your friendship will always mean a lot and stay in my heart when I look back at my journey here in the UK and say yeah, I remember when I lived in London and I remember Leah
Cheers...