The academic year consists of two terms and each term is divided into two study periods: the Autumn semester (study period 1 and 2) and the Spring semester (study period 3 and 4).
Autumn semester 2013
The Autumn semester of 2013 lasts from 2 September until 19 January (Weeks 36-03).
Study period 1: 2 September - 3 November
Study period 2: 4 November - 19 January
Spring semester 2014
The Spring semester of 2014 lasts from 20 January until 8 June (Weeks 04-23).
Study period 3: 20 January - 30 March
Study period 4: 31 March - 8 June
Note that there is no official Christmas break at Swedish universities. The Autumn semester runs from September to January. There will be no classes during the Christmas week, but you may be expected to work, for example with written assignments.