20122013
20122013 is a concatenated representation of the two-year span 2012 and 2013. It is used as a label for periods that cross the new year, notably seasonal designations, academic years, and fiscal years, and appears in data labels and file names where a dash is omitted.
In professional sports, many leagues present seasons with a 2012–13 designation, indicating that the competition began
In education, 2012–2013 typically denotes an academic year, used in universities and schools to label courses,
Because 20122013 lacks a dash, its meaning depends on context, requiring supplementary information to disambiguate such