- Unless you use them at the beginning of a sentence, you do not capitalize the days of the week and months in Spanish.
Agosto y septiembre son mis meses favoritos (My favourites months are August and September).
- We use “el” to express on when referring to a particular day of the week and “los” to express on when the action occurs repeatedly:
No trabajo el lunes (I’m not working on Monday).
No trabajo los lunes (I don’t work on Mondays).
- We also use “el” to express on with Spanish dates:
Nos marchamos el 5 de septiembre (We are leaving on September 5th).
- Nevertheless, “el” is not written after verb SER
Hoy es martes (Today is Tuesday)
- With months, years, and seasons the preposition “en” is used instead in.
Vamos de vacaciones en agosto (We go on holidays in August).
Mi hijo nació en 2010 (My son was born in 2010).
En verano hace mucho calor (In Summer it is very hot).