The real estate term fixed time refers to the specific weeks in a year that an owner of a timeshare has access to the property. Timeshare properties often have different types of arrangements regarding how owners access the property. One of the oldest forms is the fixed time version. When the timeshare owner signs up, he or she chooses a week during the year to stay at the location, and that time is set in the contract. If the owner does not use that week, he or she forfeits the annual visit. Some resorts offer more flexibility than the fixed week arrangement. They will allow timeshare owners to choose a week in a given season instead of requiring visitation during a specific week; for example, someone who owns a summer timeshare can choose a week during the summer season.