"a cheerful day" is correct and usable in written English.
It is commonly used to describe a day that is full of happiness, joy, and positive energy. Example: "Despite the rain, it turned out to be a cheerful day filled with laughter and good memories."
The front of the spa is a cheerful, Day-Glo wonderland; the back, where the girls spend their breaks, is ugly and cramped.
One, it transpires, is the surly Night, the other the cheerful Day.
The screenshot shows a cheerful "Happy Tuesday, Tabea," for example, right below the time at the bottom of the screen.
BALTIMORE — The mood in the Yankees' clubhouse was decidedly more relaxed and cheerful Sunday than it was the night before, when loud, angry words rang out after a controversial loss.
— John Tortorella called the game a mess, but he was in a cheerful mood on Tuesday after his first visit to the New York area since being fired last spring by the Rangers.
The finale is "Waiting for the Day" a cheerful romp that declares everyone will have their day and that it is worth waiting for.
On a recent mellow Saturday, a cheerful and efficient woman in her forties named Lisa Matthews was attending to the decluttering needs of the residents of Carnegie Hill, on the Upper East Side.
In the early afternoon on this particular Sunday, a cheerful 26-year-old named Denisha Warren arrived at the shuttle stop carrying her 1-month-old daughter, Timia, a round bundle wrapped in a pink blanket.
Of course, Mr. Franks could not have picked a better place to start his day on a cheerful note.
Wyman's own pants suit that day was a cheerful robin's-egg blue, and she appeared more carefully coiffed and less weary than the average delegate.
Most of the farm's population gathers once a day for a cheerful collective lunch served up by Lambert in the refectory, or outside at the big benches in fine weather.
