But this is exactly how strptime in C. Consider this:

#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(){
    
    char buf[255];
    struct tm tm;
    
    memset(&tm, 0, sizeof(tm));
    strptime("123", "%m%d", &tm);
    strftime(buf, sizeof(buf), "%d %b %Y %H:%M", &tm);
    printf("%s\n", buf);
    
    return 0;
    
}

This produces output:

03 Dec 1900 00:00


Shouldn't it stay consistent with how C function works?