asctime
char *asctime(const struct tm *);
return tmp ? asctime(tmp) : NULL;
DEPRECATED_IN_C23 char *asctime(struct tm const *);
(void)fprintf(stderr, "%s\n", asctime(tm));
(void)fprintf(stderr, "%s\n", asctime(tm));
char *t = asctime(tp);
ap = asctime(timp);
ts = asctime(localtime(&lastmod));
ts = asctime(localtime(&machinfo.time));