So, scuttlebuck has it that HMS Queen Elizabeth will depart sometime between today and Saturday 24th. Same rumour mill says that the carrier will depart around noon, anchor off Rosyth, then sail under the bridges at optimal tide which is around 1800 hours.
I`m going on pure speculation in the media and on t`interweb so am happy to be corrected on any and all details.
Cheers, Ian