According to the timeline, this would be in the summer of 1994, but that sort of gaming console was not launched anywhere until December 1994, and then only in Japan.However, considering his parents gave him whatever he wanted, they could have gone out of Britain to get it, as well as use special connections.
Also, in Harry Potter and the Goblet of Fire it is said that the Champions were chosen on Saturday 31 October, but 31 October was a Monday in 1994.
However, it was later stated that 22 November was a Tuesday, which it was in 1994.
In addition the Dursley's car, shown in the same film, bears a 2006 year registration plate.
A short film with the movie series cast, The Queen's Handbag, was produced in 2006 as part of the 80th birthday celebrations for Queen Elizabeth II.
This timeline is reinforced in Harry Potter and the Deathly Hallows when the graves of James and Lily Potter confirm that they were born in 1960 and died on 31 October 1981, further reinforced in Pottermore when the Death Eater riot on the Quidditch World Cup is stated to have taken place in 1994, and further yet in Harry Potter and the Cursed Child, in which the Triwizard Tournament is mentioned to have taken place in the 1994-1995 school year.
For the sake of convenience, this dating system will be used by the Harry Potter Wiki for all Harry Potter articles.
Despite its problems, this timeline is extensively used by fans and Warner Bros.'s timeline of the series (featured on the DVDs for Harry Potter and the Chamber of Secrets and Harry Potter and the Prisoner of Azkaban) contains dates that were interpolated from this dating system (such as Harry's birthday being on 31 July 1980 and his first defeat of Lord Voldemort being on 31 October 1981.) However, several anachronisms have crept through in the movies, such as featuring the destruction of the Millennium Bridge in the film version of Harry Potter and the Half-Blood Prince, even though the novel (and the film) are supposed to take place two years before the bridge was built.
In Harry Potter and the Order of the Phoenix, the Dursleys are seen to have a flat-screen television, which were not commonly available in the mid-1990s.
(Although one could imagine a scenario in which Fudge was delegated by the Minister for Magic to meet with the Prime Minister while he, Fudge, was in an inferior office.) Additionally, the personality and history of the Prime Minister portrayed appears to more closely match that of Tony Blair than of John Major.
An article in the Daily Mail notes that Rowling is close to the then-Chancellor of the Exchequer Gordon Brown (often viewed as a rival to Blair's leadership of the Labour Party, who succeeded him and became Prime Minister), and that she might have been attempting to show Blair's worst side.
The rebuttal for this is that the date the "real" Nicolas Flamel was born does not correspond with the Nicolas Flamel of Harry Potter.