Maybe the OP meant does the time of day change the pysical characteristics of a particular cigar. I would venture to guess, No.

I will say that my palate is in different conditions different times of day, so yes, then it would change my experience with a particular cigar.

For example, when I eat a box of chocolates after dinner, and then smoke a Padron, it really brings out the essence of chocolate in that particular cigar.