weekend for a film entirely in 3D (breaking Ups record), the highest opening weekend for an environmentalist film (breaking The Day After Tomorrows record), and the 40th-largest opening weekend in North America, despite a blizzard that blanketed the East Coast of the United States and reportedly hurt its opening weekend results. The film also set an IMAX opening weekend record, with 178 theaters generating approximately $9.5 million, 12% of the film's $77 million (at the time) North American gross on less than 3% of the screens. International markets generating opening weekend tallies of at least $10 million were for Russia ($19.7 million), France ($17.4 million), the UK ($13.8 million), Germany ($13.3 million), South Korea ($11.7 million), Australia ($11.5 million), and Spain ($11.0 million). Avatars worldwide gross was US$241.6 million after five days, the ninth largest opening-weekend gross of all time, and the largest for a non-franchise, non-sequel and original film. 58 international IMAX screens generated an estimated $4.1 million during the opening weekend. Revenues in the film's second weekend decreased by only 1.8% in domestic markets, marking a rare occurrence, grossing $75,617,183, to remain in first place at the box office and recording what was then the biggest second weekend of all time. The film experienced another marginal decrease in revenue in its third weekend, dropping 9.4% to $68,490,688 domestically, remaining in first place at the box office, to set a third-weekend record. Avatar crossed the $1 billion mark on the 19th day of its international release, making it the first film to reach this mark in only 19 days. It became the fifth film grossing more than $1 billion worldwide, and the only film of 2009 to do so. In its fourth weekend, Avatar continued to lead the box office domestically, setting a new all-time fourth-weekend record of $50,306,217, and becoming the highest-grossing 2009 release in the United States. In the film's fifth weekend, it set the Martin Luther King Day weekend record, grossing $54,401,446, and set a fifth-weekend record with a take of $42,785,612. It held the top spot to set the sixth and seventh weekend records grossing $34,944,081 and $31,280,029 respectively. It was the fastest film to gross $600 million domestically, on its 47th day in theaters. On , it became the first film to gross over worldwide, and it became the first film to gross over in the U.S. and Canada, on , after 72 days