Greetings, fellow dialists,
An ancient sea captain of my acquaintance suggests, for sunrise, an open 
circle with a short straight line tangental to the bottom of the circle 
and for sunset a similar circle with a tangental straight line at the top.
Frank 55N 1W
P.S. So many sundialling sailors! I'll try to reply to each. What an 
oddly large interest in an instrument totally useless at sea.

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