give the time of day

verb3

1. •
   To acknowledge someone; to give someone respect or attention; to tip one's hat.

   • If you're lucky, she might give you the time of day.
2. •
   To not acknowledge someone; to snub someone; to disrespect someone; to ignore someone.

   • He won't give the time of day to someone like you or me.
   • I tried to say "hi", but she wouldn't give me the time of day.
3. •
   (old-fashioned) To tell someone the time of day by looking at one's wristwatch, etc.