"En que mes es la Navidad" means "In which month is Christmas".
December
No, navidad is "christmas" nativity is "natividad"
The Spanish word for "Christmas" is "La Navidad". "Christmas" is a word derived for "Christ's Mass", celbrated by Catholics on Dec 25th.
Que la Navidad será posible después de que hubiera un gran problema.
La navidad comes from the Spanish, and in English translates to 'Christmas' or 'Christmastime'. English speakers are familiarized with the term through the popular holiday song "Feliz Navidad'.
It means "What is the date of Christmas?" The answer is December 25th, or in Spanish el 25 de diciembre.
Fiesta de la Navidad
The Spanish word for Christmas is La Navidad. In English the closest translation is the English "The Nativity", but that means something different. The actual translation of 'La Navidad' is simply 'Christmas'.
"Christmas turkey" is "pavo de la Navidad" in Spanish.
El día de la Navidad
"cuando fue la navidad" (when it was christmas)