def intToWeekday(n):
	if (n==1):
		return "Montag"
	if (n==2):
		return "Dienstag"
	if (n==3):
		return "Mittwoch"
	if (n==4):
		return "Donnerstag"
	if (n==5):
		return "Freitag"
	if (n==6):
		return "Samstag"
	if (n==0):
		return "Sonntag"

def weekday (day,month,year):
	day = int(input("Day:"))
	month = int(input("Month:"))
	year = int(input("Year:"))
	y0 = year - (14-month)//12
	x = y0 + y0//4 - y0//100 + y0//400
	m0 = month + 12 * ((14 - month)//12)-2
	name = (day + x + ((31*m0)//12))%7
        print('An diesem Datum ist ein'+intToWeekday(name))
        return (intToWeekday(name))