The Dolphin Sundial designed by Christopher St. J. H. Daniel; bronze sculpture by Edwin Russell FRBS. - The gnomon, or pointer of the sundial is formed by the tips of the two dolphins' tails, which almost meet.The tails cast a shadow onto the dial plate (that is on the ground) which is engraved with thick curved lines representing the hours. - The Dolphin Sundial was commissioned by the National Maritime Museum in 1977 to commemorate the Silver Jubillee of Her Majesty Queen Elizabeth II. . . . . . #sundial #dolphinsundial #timeteller #designoftime #greenwich #instagrammingthenatgeostyle (at Greenwich Observatory)