end of the month

I look at the sky.

私は空を見ます

I look at the sky full of stars.

私は星がいっぱいの空を見ます

I look at the sky full of stars from the rooftop.

私は屋上で星がいっぱいの空を見ます

I look at the sky full of stars from the rooftop with my younger brother.

私は弟と屋上で星がいっぱいの空を見ます

I look at the sky full of stars from the rooftop with my younger brother at the end of the month.

私は月末に弟と屋上で星がいっぱいの空を見ます