Day Date Month Holiday
Monday 02 Jan Berchtoldstag
Friday 14 Apr Good Friday
Monday 17 Apr Easter Monday
Monday 01 May Labour Day
Thursday 25 May Ascension Day
Monday 05 Jun Whitmonday
Tuesday 01 Aug National Day
Monday 25 Dec Christmas
Tuesday 26 Dec St. Stephen's Day
Source: http://www.six-swiss-exchange.com/shares/trading/trading_calendar/trading_and_settlement_calendar_en.html#