What changes at 10pm on a saturday night - access to the sunday papers, and I expect the man to be named in tomorrows papers
Or it could be that there is a question of whether the person will apply for an injunction.
so what happens is Sunday Paper writes to Presenter and says we know it's you, this is our story, we are going to publish on Sunday do you have any comment to make about this
Lawyers for presenter write back and say hang on, we are taking instructions and may apply for an injunction.
Paper says if you want an injunction you need to tell us/make application by [time - 9pm/10pm] as then we will go to print and you will have to pay the costs of recall/destruction of a newspaper.
clock ticks down and either they make an application, usually heard out of hours by an emergency judge - in which case the story is put on hold until the application is decided -publishing if there is an outstanding application would be contempt of court
or they don't in which case the paper will publish. and the front pages are normally made available to new reviewers the night before unless there is a super exclusive which may sometimes be second edition so that other papers have less chance to copy the story.