How will I know when my NC Archives Fortune Cookie expires?

As is true for all Fortune Cookies, a countdown clock indicating the amount of time left will be shown in a special banner at the top of any relevant pages -- in this case, the NC Archives page. The time the cookie expires depends on when you opened your cookie. For example, if you opened the cookie at 10:00 AM, day 2 will start after 10:00 AM the next day and so forth until it ends.