DOKK / manpages / debian 13 / libsdl3-doc / SDL_GetDayOfWeek.3.en
SDL_GetDayOfWeek(3) SDL3 FUNCTIONS SDL_GetDayOfWeek(3)

SDL_GetDayOfWeek - Get the day of week for a calendar date.

Defined in SDL3/SDL_time.h

#include "SDL3/SDL.h"
int SDL_GetDayOfWeek(int year, int month, int day);

the year component of the date.
the month component of the date.
the day component of the date.

Returns a value between 0 and 6 (0 being Sunday) if the date is valid or -1 on failure; call SDL_GetError () for more information.

This function is available since SDL 3.2.0.

SDL 3.2.10 Simple Directmedia Layer