columbus day is celebrated on oct 21st. however columbus did not discover america. there were millions living there already but even if you take it as finding a land it was erikson for whom also a day is marked in american calender. Leif Erikson Day is an American observance occurring on October 9. It honors Leif Ericson (Leifr Eiríksson), who brought the first Europeans known to have set foot in North America.
erikson is of interest to us be cause he was a contemprory of rajaraja.