Sacred space and time are constructs that religious people use to access the sacred or ultimate reality. Rituals and myths help establish sacred times and places that are qualitatively different from ordinary profane times and spaces. The most important function of sacred time and space is to give religious communities a meaningful way to structure and experience their world. There are two main types of sacred time - timeless eternal time associated with deities, and holy days that commemorate divine events. Sacred spaces can be natural locations, buildings, or portable objects used for prayer or ritual.