anthelion

from The Collaborative International Dictionary of English v.0.48

Parhelion \Par*hel"ion\, n.; pl. {Parhelia}. [L. parelion, Gr.
   ?, ?; para` beside + ? the sun.]
   A mock sun appearing in the form of a bright light, sometimes
   near the sun, and tinged with colors like the rainbow, and
   sometimes opposite to the sun. The latter is usually called
   an {anthelion}. Often several mock suns appear at the same
   time. Cf. {Paraselene}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Anthelion \Ant*hel"ion\ (?; 277, 106), n.; pl. {Anthelia}.
   [Pref. anti + Gr. ? sun.] (Meteor.)
   A halo opposite the sun, consisting of a colored ring or
   rings around the shadow of the spectator's own head, as
   projected on a cloud or on an opposite fog bank.
   [1913 Webster]