Apple delivery dates

Hello everyone,

Yestreday I've ordered from Apple the MacBook Air 11" with 128GB, It said that the delivery will arrive on the 22th, But the problem is what time the delivery arrives time on the 22th the delivery will arrive?

For those who did not understand:

I need to know the time in the day a standard Apple delivery will arrive.

And what if I'm not home when the Apple delivery guy arrives, What will happen then?

Thank you for your help,

Nadav