Thursday 01 Jan New Year Holiday
Thursday 23 Apr National Sovereignty and Children's Day
Friday 01 May Labour and Solidarity Day
Tuesday 19 May Commemoration of Ataturk, Youth and Sports Day
Thursday 16 Jul Ramadan Feast (Half Day)
Friday 17 Jul Ramadan Feast
Saturday 18 Jul Ramadan Feast
Sunday 19 Jul Ramadan Feast
Sunday 30 Aug Victory Day
Wednesday 23 Sep Sacrifice Feast (Half Day)
Thursday 24 Sep Sacrifice Feast
Friday 25 Sep Sacrifice Feast
Saturday 26 Sep Sacrifice Feast
Sunday 27 Sep Scarifice
Wednesday 28 Oct Republic Day (Half Day)
Thursday 29 Oct Republic Day
Source: http://borsaistanbul.com/en/products-and-markets/official-holidays