When do you like the sky the most - sunny, cloudy or starry?

I'm with Lucia on that. Twilight. Let me throw in George Russell's thoughts about it. I think you'll relate. 

Far above the dim twilight flutters
Moth wings of vapour and flame;
The lights danced over the mountain,
Star after star they came.

The lights grew thicker unheeded
For silent and still were we;
Our hearts were drunk with a beauty
Our eyes could never see.

At the risk of being accused of getting all philosophical... How can you separate them... They are all aspects of the one thing... I love it all

Starry, starry night.

I've mentioned before that I live in a very rural area, 2 miles up a mountain in the middle of the woods.  At night, I have that amazing view of the sky that just overwhelms me at times.  Yet, I have to say, my favorite view of the sky is at dawn.  There is something about a new day breaking that fills me with joy.  It's a fresh start that delivers all sorts of possibilities.

During the day I enjoy a bright sunny day with a blue sky. At night, I love to star gaze and look for the satellites going across the sky.

sunny

Oh, I don't have a favourite among them. Obviously it will depend on what I am doing or hoping for at the time, but I accept the sky as it is, and by and large I appreciate it in any of its moods.

"Sunset" ... I've seen some amazing sunsets.