Function is_date_known

date.c:571–574

}

static int is_date_known(struct tm *tm)
{
	return tm->tm_year != -1 && tm->tm_mon != -1 && tm->tm_mday != -1;
}

static int match_multi_number(timestamp_t num, char c, const char *date,
			      char *end, struct tm *tm, time_t now)