Do you have time when it was booked info might be off for few hours time I read at other forum suggested between 23-02. Since he went to sleep at his sister place Stephanie who took him to airport.
I think I've guessed where you read that. As usual, it's a muddled interpretation, and there's a bit of a muddle in the English translation as well.
According to his answer to a previous question, he had things he felt required his personal presence related to his business to sort out and decided to go back over.
His reply to what the PJ presumably asked him (i.e., if he'd changed the date of his booking, to either earlier or later) was that he hadn't, he'd booked the flight for 1 May. From the Flybe sheet, he'd booked it on 30 April.
That got garbled, from what I suspect is your source, into he'd booked it on the day of departure (i.e. at some point past midnight on 1 May).
ETA:
http://www.mccannpjfiles.co.uk/P8/08_VOLUME_VIIIa_Page_1960.jpg