Note to Hamlet, 1.1.120: "sick almost to doomsday with eclipse"

Act 1, Scene 1, line 120
This phrase may be an echo Matthew 24:29, in which Jesus recounts the signs of the end of the world:
Immediately after the
tribulation of those days shall
the sun be darkened, and the
moon shall not give her light,
and the stars shall fall from
heaven, and the powers of
the heavens shall be shaken.
King James Version