In my world each person has the ability to call upon the power of a star; using it to further whatever end they’d want—i.e. using the sun’s energy to power a spell. However, they can ONLY call upon the power of the visible stars in the sky and once the stars are on the other side of the planet they cannot call on them. An example of such a star is the sun. People can call upon its power while it is in the sky, but once it sets they cannot.

Now, granted that the sun is the only visible day star—so, therefore the only star whose power people can call upon—is there a way for me to make other stars other than the sun visible in the day sky, thereby increasing the number of power sources?