6:45 is certainly not the first genre film to borrow its circular structure from Harold Ramis’ Groundhog Day (1993) – something which has already been done, for example, in Dario Piana’s The Deaths of Ian Stone (2007), Chris Smith’s Triangle (2009), Justin Benson and Aaron Moorhead’s Resolution (2012) and The Endless(2017), Vincenzo Natali’s Haunter (2013), Park Hong-min’s Alone (Hon-ja, 2015), Madellaine Paxson’s Blood Punch (2014), Christopher Landon’s Happy Death Day (2017), its sequel Happy Death Day 2U (2019), Natasha Kermani’s Lucky (2020) and J.R. Sawyers’ Before I’m Dead (2021).