Show day of the week stats

cache.cpp

@@ -26,12 +26,15 @@ void Cache::set_date(std::tm* t) {
 	char tmp[20];
 
 	date_tm = *t;
+	std::mktime(&date_tm);
 
 	year = std::to_string(1900+date_tm.tm_year);
 	std::strftime(tmp, 20, "(%m) %B", &date_tm);
 	mon = tmp;
 	day = std::to_string(date_tm.tm_mday);
 	hour = std::to_string(date_tm.tm_hour);
+	std::strftime(tmp, 20, "(%u) %A", &date_tm);
+	day_of_week = tmp;
 
 	std::strftime(tmp, 20, "%F", &date_tm);
 	date = tmp;

cache.h

@@ -59,6 +59,7 @@ public:
 	std::string mon;
 	std::string day;
 	std::string hour;
+	std::string day_of_week;
 	std::string date;
 
 	void set_date(std::tm* t);

geostat.cpp

@@ -351,6 +351,7 @@ int main(int argc, char** argv) {
 	}
 
 	if ((show_calendar || show_html) && !get_not_found) {
+		show_histogram(&cc, &Cache::day_of_week, "Days of the week", show_html, 0);
 		show_histogram(&cc, &Cache::mon, "Months", show_html, 0);
 		show_histogram(&cc, &Cache::year, "Years", show_html, 0);
 	}