HOLIDAYS VS HOLIDAY + PREP

Sometimes we have problems with the prepositions. There is a trick: If the word contains the word "day" or a piece of day like "Eve" it is with the preposition ON.
Let's see:

• On Mon"day". On Tues"day"...


• On my birth"day".


• On holi"day".


• On Christmas's "Day". (In December 25th)


• On Boxing "Day". (In December 26th)


• On Christmas's Eve.


• On New Year's Eve.


• On Fool's "Day". (In April 1st)


• On Good Fri"day".

But AT Christmas, and AT Easter.

Holidays means a long holiday like summer holidays. In Spanish we say "dia de fiesta o festivo", in English we have to say a public holiday or a bank holiday.