I visited the historic Wrigley Field in Chicago (home of the Cubs) a couple of weeks ago. In the baseball park, it is always fun to watch a day turning into night in the middle of the game.
I drew the day and night of the Wrigley Field in four tones with 6B pencil, for fun! Started with two outlines (day+night,) numbered the spaces, and filled them with a pencil according to the numbers.
Here is the real Wrigley Field, day & night.