Tuesday 01 Jan New Year's Day
Wednesday 02 Jan Berchtoldstag
Friday 29 Mar Good Friday
Monday 01 Apr Easter Monday
Wednesday 01 May Labour Day
Thursday 09 May Ascension Day
Monday 20 May Whit Monday
Thursday 01 Aug National Day
Wednesday 25 Dec Christmas Day
Thursday 26 Dec St.Stephen's Day
Source: http://www.six-swiss-exchange.com/shares/trading/trading_calendar/calendar/2013/grid_en.html