Is IMSOL-GRANADA closed on national holidays?

he Spanish public holidays are: 1st January, 6th January, 28th February, Holy Thursday, Holy Friday (Easter), 1st May, 15th August, 12th October, 1st November, 6th December,  8th December, 25th December, plus two local holidays (2nd January and in June).
The Spanish Labour Laws say holidays falling on Sundays will be celebrated
on the following Monday
When there are two bank holidays in the same week, IMSOL-GRANADA only takes one of
them.
There are no classes on these days, no replacement classes are offered (except for the individual courses and Group Stays) and there is no refund for lost classes.