My homophone is sad

Question

Here is one of my classic puzzles (1, 2, 3, and 4), but this one includes opposites.

Me, I rise,

My homophone is sad,

My opposite falls,

My opposite's homophone saves the day,

My opposite's anagram is an object.

Answer 1

Me, I rise,

Morning

My homophone is sad,

Mourning

My opposite falls,

Night

My opposite's homophone saves the day,

Knight

My opposite's anagram's is an object.

Thing