I think a different thread saw some wording that said 6 months.

I've read numerous other postings from people want to cancel their card quickly. Can someone explain to me why? You've already paid the (non-refundable) annual fee for the card, so why not keep it until the next annual fee is due? From a credit score perspective, I can't see how applying, getting approved, then cancelling a card within 1-2 months is any better than keeping it for 12 months or so. If you are worried about 'excessive credit line', you can always call to reduce the credit line on your card.

Jeff