It could mean many things: opposite/unfavourable day of/to etc.
It looks like someone took the slang American English term "opposite day" and translated it literally into Spanish. However, as such a term does not colloquially exist in Spanish, the term is nonsensical in Spanish as a specific idea.
contrary...for example Lo contrario de padre means the contrary of dad which is madre
"Contrario de con" in Spanish means "opposite of with." It doesn't form a complete phrase or expression in Spanish.
It means "the opposite of expensive" Cheap in spanish is "barato"
altar for dia de los muertos means an altar to the dead.
"El dia de la madre" means Mothers' day.
Felíz Dia de la Amistad is Spanish for Happy Friendship Day.
It Means "payday".
The day of the Magi
Feliz Dia de las Madres is a spanish term for Happy Mother's Day.
what does los angelitos mean?
my birthday
The day of the Magi