The first game we will hear about in the book is in 1962 and the last game is in 1992. So the book is from the period between then.
Arsenal played at Highbury, but now they play at their new homegound called Emirates.
What has changed most of the period in the book to this day, are the supporters. The fans were more crazy than they are now, but there are still many crazy fans, but not as many as before. It is much more ” tourists ” in matches now, then it was before. The atmosphere is slightly worse at matches in England now than it was before.