Answer:
A hole in a pole. Though I fill a hole in white I'm used more by the day and less by the night
When the clock has no angle, I will own yesterday, tomorrow and tonight. What am I?
I'm simple for a few people, but hard for them to hear. I live inside of secrets and bring people's worst fears. What am I?
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
I am owned by Old McDonald.
The more that there is of this, the less you see. What is it?