Just joined the forum but have been reading all your posts for some time now. I am also very confused about conflicting media reports regarding timings.
The leisure centre where AJ went swimming that evening appears to have three 50 minute slots, inclusive of changing time, for junior swimming. These 50 minute slots start at 4pm and end at 6.45pm. The report here:
http://www.walesonline.co.uk/news/wales-news/2012/10/09/april-jones-search-a-miracle-could-have-happened-there-has-to-be-hope-91466-32000982/ states:
April used the centre, she was a member of the centre, she came in for swimming lessons the night she was taken, he said.
She was here having lessons at about 5pm so it was only two hours later that it happened.
This would suggest to me that her swimming lesson was the middle slot - sometime around 4.50pm to 5.40. I am not sure how long it would take to get home from here or to parents evening. As the parents evening has been reported as commencing at 5pm, I would imagine that, if this is the case, they arrived at parents evening no earlier than 5.45.
It has also been reported that CJ and PJ were seeing both AJ's teacher and the son's. Now having been to several parents evenings, I would imagine this could of taken some time...This would not leave much of a time slot between going back home and the call to the godmother at 6.50pm.
However, both these reports suggest AJ was not at parents evening at all.
http://www.telegraph.co.uk/news/uknews/crime/9588326/April-Jones-Mark-Bridger-was-at-school-parents-evening.html
http://www.dailymail.co.uk/news/article-2213154/April-Jones-abduction-Dont-blame-parents-letting-play-outside-says-Jan-Moir.html#ixzz2A1B1pBht
Apologies in advance if I have broken any forum rules