| Country | Date | |
|---|---|---|
| Spain | 6 October 2006 | (Sitges International Festival of Fantastic and Horror Cinema) |
| Germany | 11 February 2007 | (European Film Market) |
| Portugal | 24 February 2007 | (Fantasporto Film Festival) |
| Spain | 23 March 2007 | (Las Palmas Film Festival) |
| Belgium | 12 April 2007 | (Brussels International Festival of Fantasy Films) |
| UK | 29 April 2007 | (Dead by Dawn Edinburgh Horror Film Festival) |
| France | 16 May 2007 | (Cannes Film Market) |
| South Korea | 14 July 2007 | (PiFan International Film Festival) |
| Spain | 14 September 2007 | |
| USA | 22 September 2007 | (Austin Fantastic Fest) |
| Germany | 11 October 2007 | (DVD premiere) |
| USA | 12 October 2007 | (Los Angeles International Latino Film Festival) |
| Brazil | 15 October 2007 | (DVD premiere) |
| Puerto Rico | 26 October 2007 | (Puerto Rico Film Festival) |
| France | 2 November 2007 | (Nantes) |
| Argentina | 3 November 2007 | (Mar del Plata Film Festival) |
| Italy | 17 November 2007 | (Scienceplusfiction Film Festival) |
| Japan | 18 November 2007 | (DVD premiere) |
| UK | 28 November 2007 | (DVD premiere) |
| Indonesia | 30 November 2007 | (Screamfest Film Festival) |
| Spain | 5 March 2008 | (DVD premiere) |
| Italy | 15 March 2008 | (X_Science: Cinema Between Science and Science Fiction) |
| The Cold Hour | Germany (DVD box title) / International (literal title) (English title) |
| A Hora Negra | Brazil (DVD box title) |
| Bio-Crisis | Japan (DVD title) (English title) |
| The Dark Hour | International (English title) |
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| Recent releases | IMDb now playing |