[SamAdams76]

Large celestial objects appearing to cross each other's path from the vantage point of a particular group of people.

It's odd that we make such a big deal about this.

[DBrow]

“It’s odd that we make such a big deal about this. “

These events can be dramatic to see. Also, if your population does not know astronomy, math, or science and generally pay little attention to the sky, those who do can take advantage of this to frighten or amaze people.