In Pictures: ‘Wear a Hat Day’ at Hjaltland Housing Association 3 Apr 2018 Reading time: 1 minute Article Tags: in pictures hjaltland housing association Staff at Hjaltland Housing Association took part in ‘Wear A Hat Day’ on Thursday 29th March 2018 to raise money for Brain Tumour Research. Staff wore their hats throughout the day and raised money by selling squares for a raffle prize.