sundial cannons
... that sundial cannons were triggered by the sun to fire at noon?
... that <b id="mwAZ0"><a href="./Sundial_cannon" id="mwAZ4" rel="mw:WikiLink" title="Sundial cannon">sundial cannons</a></b> <i id="mwAZ8">(example pictured)</i> were triggered by the sun to fire at noon?