GMT, does in fact mean greenwich mean time. Its the time by which all other clocks are set!

As for an open day................... well its where we open the allotments up to the public, let them walk round, people sell produce, and there is a sort of raffle thing where you buy tickets and then they pull the ticket out of a tombola and if yours gets pulled you have won a prize. I dont know if Ive won anything yet as the committee members where away by the time i got there. I did 1 hrs worth of digging and cleared some rubbish and now im home. Gonna order pizza tonight!!!!!!!!!!