Thursday 01 Jan New Year's Day
Friday 03 Apr Good Friday
Monday 06 Apr Easter Monday
Friday 01 May Labour Day
Monday 25 May Whit Monday
Thursday 24 Dec Christmas Eve
Friday 25 Dec Christmas Day
Wednesday 30 Dec Half Day Trading
Thursday 31 Dec New Year's Eve
Source: http://www.boerse-frankfurt.de/arcmsdownload/27263a0ae073d04da82bfde7a91f8398/CONTENT.pdf/DB_HK_2015_en.pdf