gloaming

/ˈɡloʊmɪŋ/
noun
  1. Twilight; the soft, dim light of the sky after sunset.
    • They sat on the porch and watched the colors of the gloaming fade.
    • In the gloaming, the mountains turned a deep purple.
    • The birds sang softly in the gloaming as the day ended.
Antonyms