Although usually described as a "week", the length of this period varies widely from university to university and country to country, ranging from about three days to a month or even more (e.g. four or five weeks, depending on the program, at Chalmers). The length of the week is often affected by each university's tradition as well as financial and physical constraints. Additionally, institutions may include programming in the summer months before the first-year to aid in the transition. Some programs may be audience-specific (i.e. international orientation, transfer student orientation, graduate student orientation). This may also be referred to as orientation or orientation programs.