Thursday 01 Jan New Year's Day
Friday 02 Jan Berchtoldstag Friday 03 Apr Good Friday Monday 06 Apr Easter Monday Friday 01 May Labour DayThursday 14 May Ascension Day
Monday 25 May Whit MondayThursday 24 Dec Exchange Holiday
Friday 25 Dec Christmas DayThursday 31 Dec Exchange Holiday
Source: http://www.six-swiss-exchange.com/download/participants/regulation/trading_guides/trading_calendar_2015.pdf