I looked up these words in my dictionaries, and found:
daytime phone number
And I googled in googlebooks and found:
What are the things found in the day sky and in the night sky?
Sometimes people are surprised to see the moon in the daytime sky, and they think something has gone wrong!
Are both 'the day sky' and 'the daytime sky' good English with no difference?
Thank you again in advance.
Student or Learner