Unlike in English, the days of the week & months of the year aren’t written with a capital letter. In Spanish, only the names of people, places & the internet (which I suppose is a place?) have capital letters.

Los días de la semana – The days of the week

lunes – Monday

martes – Tuesday

miércoles – Wednesday

jueves – Thursday

viernes – Friday

sábado – Saturday

domingo – Sunday

Los meses del año – The months of the year

enero – January

febrero – February

marzo  – March

abril – April

mayo – May

junio – June

julio – July

agosto – August

septiembre – September

octubre – October

noviembre – November

diciembre – December

Las estaciones – The seasons

primavera – spring

verano – summer

otoño – autumn

invierno – winter

Horas / tiempos del día – Times of day

From sunrise until lunchtime

(taking into account that lunch is eaten at around 2pm or 3pm )

 la mañana – morning

From after lunch until around sunset

 la tarde – afternoon / evening

From sunset until midnight

la noche – night

From midnight until sunrise

la madrugada

A few tips……

If we want to say that something is going to happen on Monday – we say ‘the’ Monday – el lunes

I’m going to buy a car on Monday – Voy a comprar un coche el lunes.

If we want to say that something happens every Tuesday, there are several ways of saying it.

We can simply that it happens on ‘the’ Tuesdays – remembering to pluralise ‘the’ & conjugate it to / make it ‘fit’ the day – all days are masculine.

Do you work every Tuesday?  – ¿Trabajas los martes?

We can use ‘todo’ which means ‘all’. again we have to pluralise & conjugate / make it fit

Jorge works on Wednesdays – Trabaja todos los miércoles, Jorge.

The easiest though, is to use the word ‘cada’, which means ‘each’ or ‘every’. This is the easiest because it doesn’t have to be pluralised nor conjugated!!

We work on Thursdays – Trabajamos cada jueves.

If we want to say that we do something in July, for instance, or in a season – we use the word en for ‘in’

María & Ana always swim in the sea in July – Siempre nadan en el mar en julio María y Ana.

However… if we want to say that something happens in the morning – we say por la mañana

You & Javier drink wine in the evening, don’t you? Tomáis vino por la tarde, tú y Javier ¿No?