Yes, it is. It means literally "good days", in the plural. It is usually translated to mean in the singular, but it is also correct to say "buen día", which really is the Spanish singular for "good day".
Buenas Tardes
"¿Buenos dias, Senorita (name), cómo esta?" (How are you?)
Buenos Dias.
Buenos dias. (there is an accent on the letter "i" in "dias")
Buenos Dias
You would say "buenos días".
You say: "Buenos Dias"
'Buenos dias Steven' (boo-AINoss thee-ass, Steven) ('th' as in 'the')
buenos dias
"Buenos dias"
Amigos Buenos dias
good morning this is for them to laugh a little