hmm i have been looking
but every time I look i find things like
forum.retrosurvival.co.uk/ar/t958.htm
it was about ten years before all that me and my brother watched it because there was nothing else on and it went on for a good 3 hours I think.
(Radio Active Tea, Sat 4 Jul 2009, 0:17, archived)

that'll probably make it about an hour and a half then
i could have sworn watching "the secret of nimh" as a youngen that it was a good two and a half hours.

80 mins it turns out.

sleepybedtime now. night!
( ms morbo 003 days since last meltdown, Sat 4 Jul 2009, 0:44, archived)

nn sleep well

(Radio Active Tea, Sat 4 Jul 2009, 0:51, archived)