It is the universal custom to display the Flag only from sunrise to sunset on buildings and on stationary flagstaffs in the open. However, when a patriotic effect is desired, the Flag may be displayed twenty-four hours a day, IF properly illuminated during the hours of darkness.I felt that it was a good time to fly the US Flag, I got at my father's funeral, off our second floor porch.
When displayed either horizontally or vertically against a wall, the Union should be uppermost and to the Flag's own right; that is, to the observer's left.
The blue field of stars is on the top left, if you are looking at the flag from the street. I also have the flag lit up at night. I got an outdoor spotlight at Home Depot.
Flying the flag makes me feel better.