Events Tweet by @sheffdocfest Published Mar. 11 2024 10:00 AM Congratulations to #SheffDocFest2023 title 20 Days in Mariupol for winning Best Documentary Feature Film last night at the #Oscars.20 Days in Mariupol by Мstyslav Chernov, winner of our 2023 Tim Hetherington Award, is an unsparing portrait of Mariupol under siege., — Sheffield DocFest (@sheffdocfest) March 11, 2024 10:00