The Lokerse Feesten is a pretty regular festival in Belgium, however they do have an explicit Metal Day and a Punk Rock Day. For the Punk Rock day they had already announced Dropkick Murphys, Bad Religion, Turbonegro, Suicidal Tendencies and The Living End with more to be announced. Today they announced the first names for the Metal Day which consist out of Gojira, Steel Panther, Hatebreed, Brides Of Lucifer later on there will be one more headliner announcement and 2 other acts.
The Metal day is on the 5th of August 2018, Facebook event here and the Punk Rock day is on the 8th of August 2018, Facebook event here. You can get your tickets for both days here as well as more information.