I imagine they got the new timings from network centre and took them literally, both on the slide and verbally.
I'm sure that would be the case - either that or it was a typo and the announcer read it out in the confusion. They spelt Denis Norden's name wrong on it too. As I said earlier in the thread, at that stage ITV were running massively late every night anyway.
I remember that Premiership edition. There wasn't the usual opening titles (the only time surely?), after the sponsor tag it faded into the studio and Des said something along the lines of "we normally start the programme with 'Beautiful Day'...". Then they went straight into the day's big game which was Leeds vs Manchester United.
Indeed, Des saying "we thought in the circumstances it wasn't appropriate", and at the end it cut straight from Des saying goodnight to a static "Carlton/ISN Production" slide. I remember they didn't have the whizzy graphics flying onto the screen either, just a static set.
Remarkable to see how little coverage, relatively, it got on ITV that night - it carried on until 7.50, then there was Stars In Their Eyes, the scheduled bulletin - in its planned duration - then Denis Norden as scheduled (the ultimate in disposable telly that could go in any slot), then another half hour in place of After They Were Famous which was only there as a filler anyway, then The Premiership as scheduled. So between 7.50 and 11.50 there was less than an hour of news, which seemed remarkable given that I'd read all those pieces about how there'd be several days of national mourning and telly would only show ballet and military music and so on.
In fact it's remarkable how little coverage there was all round, every channel was back showing normal programmes by 9.30.