Old Rock Day is observed on January 07, 2020. Old Rock Day does not celebrate a certain music style but literally old rocks. Not only geologists are interested in fossils or other stony things. Old Rocks tell stories about history that everyone can appreciate. Rock fans spend Old Rock Day in geo-museums or outside seeking for interesting, beautiful old rocks.
A very individual way to celebrate Old Rock Day is the creation of a pet rock. Finding one special stone and then decorate and paint it into a small "pet" is a great activity one can do with friends or family. Wearing a stone-necklace also fits Old Rock Day and is not depending on the weather.