This program tells you how many days it will be until your next birthday. Please enter today's date: What is the month (1-12)? 12 What is the day (1-31)? 25 12/25 is day #359 of 365. Please enter your birthday: What is the month (1-12)? 12 What is the day (1-31)? 25 12/25 is day #359 of 365. Happy birthday! << your birthday fact >>