Subject: Why does it appear that the sunrise is shorter than the sunset

A friend, who lives in Key West, Florida has noticed it takes a shorter time 
for the sun to light up the sky vs the sky to become dark after a sunset. This 
was also mentioned by a solar panel installator who works through out the 
country that his observations have been that it takes longer for the sky to 
become dark after sunset than to become light at sunrise. Why is this? Is it 
because light absorbed during the day is still reflecting from plants etc after 
sunset? Thanks in advance for your thoughts on this. kathleen

Re: Why does it appear that the sunrise is shorter than the sunset