Ambiancé, an experimental film by Anders Weberg, will premiere in 2020 and will run for 720 hours non-stop. That's right, a movie with a running time of 30 straight days — and you thought Hele Sa Hiwagang Hapis felt long? The film's set in Sweden and features two performance artists on a beach. It's described on IMDb as a documentary where "space and time is intertwined into a surreal dream-like journey beyond places and is an abstract nonlinear narrative summary of Weberg's time spent with the moving image." I don't know what that means but it sounds really boring.
So without further ado, here's the 7-hour 20-minute trailer for Ambiancé: