It won't make the day longer. Each hour you wake up earlier you will also probably go to sleep earlier. Of course you could also sleep less, but also in that case IMHO it doesn't make a large difference whether you add those extra hours to your night or to your morning.
Some might argue, that morning hours are more productive. But for me that is only true if I have slept well and long enough and it also implies that whatever you do in the evening will suffer by starting your day earlier.