heliacal

Adjective

Meaning

Emerging from the light of the sun, or passing into it; rising or setting at the same, or nearly the same, time as the sun.

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Examples

the heliacal rising of the Dog Star Source: Internet

the heliacal or Sothic year is determined by the heliacal rising of Sothis (the Egyptian name for the Dog Star) Source: Internet

The Romans celebrated the heliacal setting of Sirius around April 25, sacrificing a dog, along with incense, wine, and a sheep, to the goddess Robigo so that the star's emanations would not cause wheat rust on wheat crops that year. Source: Internet

It probably derives from plein ('to sail') because of the cluster's importance in delimiting the sailing season in the Mediterranean Sea : 'the season of navigation began with their heliacal rising '. Source: Internet

The heliacal rising of the next decan star marked the start of a new civil week, which was then ten days. Source: Internet

The term heliacal circle is used for the ecliptic, which is in the center of the zodiacal circle, conceived as a band including the noted constellations named on mythical themes. Source: Internet

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