So, I just received my first two cards: Chase Sapphire Preferred and Chase Ink Bold. They both have a minimum spend within 90 days of opening the account. How do I know the exact date the account was opened? I assume this is different than the date I activated my card? I'm just trying to figure out when exactly I have to meet the minimum. It's feeling a little tight, and I'm a little scared of doing too much of the manufactured spending so soon and with so little experience. Sorry if this is a dumb question. The world of credit cards in general is rather new to me.