Halfbaked_Boy - the LAS regs. do not specify 24 hours. I quote the regulation asterisk in the same section pointed to in my earlier posting:
'* The cross-country flight should be regarded as a single
planned exercise including landings at two intermediate
aerodromes and completed during the course of a single
day. Flights completed over the course of more than one
day will not normally be acceptable towards licence issue.
Should an applicant claim that there were mitigating
circumstances that prevented the flight from being
completed as originally planned, the applicant must send
in a written submission to PLD explaining what happened
together with any relevant supporting documentation/
information for consideration.'
Without fail, the CAA will have a different idea of what constitutes a day from your notion.
Then again, they don't specify locale - a Mercurian day is 176 Earth days, I gather. Try that on the PLD.