Progressive creationism or the day-age interpretation is an interpretation of the biblical creation account which, like the Gap theory, attempts to harmonise the Bible with uniformitarian ideas about the age of the earth, while at the same time rejecting evolution.
It suggests that creation took place over a much longer period of time than the literal Garden of Eden six day account related in Genesis and Exodus, and, depending on the version, does not necessarily have the "days" in order.
Progressive creationists generally believe that a series of distinct creation events took place.