Normally I get my warnings about bank holidays when I visit Mercadona and see signs saying what days they are closed. As Mercadona is now closed and not opening again until 14 March I did not get a warning from there about Andalucia Day.
Luckily a friend asked me recently whether it was a bank holiday this coming Thursday. I had a look on the internet and found out it is a regional bank holiday for Andalucia. So watch out for other businesses being closed on Thursday 28 February 2019. As well as Mercadona of course.
PS I wonder if the small Coriván supermarket in the back of Porto Fino will get much more business in the next couple of weeks.