 by lowering the um british flag and then in a few weeks time we'll have a sun up ceremony where we put the flag back up and at the moment we're in the middle of our darkest time which because of our latitude we never have 24 7 darkness instead over the middle of the day we have these few hours of kind of twilight the sun never comes up but you get these few hours of workable light where it looks like the sun's just about to rise or just about to set