Daily rotation and orbital motion are independent of each other but they do combine to create effects such as the hemispherical variations in temperature, daylight/darkness asymmetries and so on.

The fact is that when daily rotation and all its effects are subtracted, the entire surface of the Earth still turns once to the central Sun but this rotation is uneven and turns parallel to the orbital plane thereby changing daily rotational traits to the Sun -

http://afewbitsmore.com/img/2015_ecliptic.png


The 'tidal locking' people display only shallow reasoning or worse, after all, I still don't know what it takes to ignore the Polar/day/night cycle at the North and South Poles where daily rotation diminishes to zero yet there is a single sunrise/noon/sunset cycle each year.