*** TONIGHT ***
It is tradition that every year people dunk themselves into the sea (backwards, facing the land not the sea) on this night to repel all bad things and change their luck. It has become a big party with music, chinchorros and food trucks.
The festivities are tonight. Here is a spanish article about it you can use Google translate: https://www.elnuevodia.com/entretenimie … n-2333953/
Not sure what other towns have planned