write a program that asks the user the day number in a year in range 2 to 365 and asks the first day of the year - Sunday or Monday or Tuesday, etc. Then the program should display the day on the day-number that has been input

Answer 1

dayNames = ["MONDAY", "TUESDAY", "WEDNESDAY", "THURSDAY", "FRIDAY", "SATURDAY", "SUNDAY"]

dayNum = int(input("Enter day number: "))
firstDay = input("First day of year: ")

if dayNum < 2 or dayNum > 365:
print("Invalid Input")
else:
startDayIdx = dayNames.index(str.upper(firstDay))
currDayIdx = dayNum % 7 + startDayIdx - 1

if currDayIdx >= 7:
currDayIdx = currDayIdx - 7

print("Day on day number", dayNum, ":", dayNames[currDayIdx])

Answer 2

def D(firstDay, dayNumber):
days = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']
firstIndex = days.index(firstDay)
endIndex = (firstIndex + int(dayNumber) - 1) % 7
return days[endIndex]

year = input("Year: ")
firstDay = input("First day of the year (e.g. 'Monday'): ")
dayNumber = input("Day number: ")

print(D(firstDay, dayNumber))

Answer 3

what about February 29 ? Just use datetime, it may be more efficient ?