Many Christian sects (historical and modern) don't view Genesis 1 as specific "points in time". There are various alternative theories -- Augustine (354-430 AD) suggests that creation of all six "days" worth of stuff was actually a single instantaneous event, and that the "days" might refer to the way God revealed creation to the "angelic mind", for example. One theory gaining more prominence is that the Genesis account parallels an older Egyptian account in a subversive way -- using the same structure (including the "days") but setting itself apart in the way it speaks about the details of God and creation (see https://bible.org/article/genesis-1-2-light-ancient-egyptian... .) Viewed from this perspective, the "days" are just poetic structure and have nothing to do with the actual timing of creation.