The Gloomy Day was created in 1565.
No, gloomy is an adjective. What a gloomy day.
Gloomy Sunday was created in 1933.
Gloomy Lights was created in 2003.
the fact that nobody has answered is a gloomy situation for the state of your question. It is a Gloomy day; I have a gloomy feeling about..., etc.
Bleak and gloomy are the synonyms in that sentence.
a school day
it was a gloomy day
complex
It is a gloomy day today!
They could be if you are not nice to them or they are having a bad day.
The structure used in the sentence "It was a gloomy day when we found out our team lost the debate" is a complex sentence. It contains an independent clause ("It was a gloomy day") and a dependent clause ("when we found out our team lost the debate"). The dependent clause provides additional context about the timing of the event described in the independent clause.
Quelle journée lugubre/sombre/morne