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"Enero" is a noun which is often translated as "January", and "diciembre" is a noun which is often translated as "December". Learn more about the difference between "enero" and "diciembre" below.
el enero()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
el diciembre()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
