Greenwich Means Time or  If Time flies When Your Having Fun Set Your Clocks Back.Let’s rock the boat of time stop the clock and lightLet’s have nights in the daytime, daytime at nightLet’s do Elevenses at twelve. - that'd be great -Let’s  do lunch in the morning, brunch at  eightAnd we'll have High tea at nine and  dinner at  tenIf a stranger asks the time we'll answer them with “when”we’ll do chores at five to twoAnd end them at five to two tooWe’ll dance on the floor at quarter to fourIn bright purple tutus’ tooTime might wait for no “man” but no-one wants it toWhen in Greenwich use it unwisely. Always jump the queueAnd don’t save time ,  waste it, there’s tons of it around(In the present it lasts forever if ever you get profound)We’ll have 99 minutes per hour and 20 seconds per minuteEveryone in the boat race  loses and every one will win itLose time and  your train of thought and at the same time lose trackTime Flies when you’re having fun  so set your clocks backAnd Let’s rock the boat of time stop the clocks and lightLet’s  have night  in the daytime and daytime in the night Lemn Sissay is writer in residence at Greenwich and Docklands International  Festival and he will be around throughout.