In which year is September 4 on a Thursday?
2008 is the next year that September 4 falls on a Thursday. 2003
was the last time September 4 fell on a Thursday. Dates move
forward one day a year, except that dates in January through
February move forward two days in the year after a leap year and
dates from March through December move forward two days in the leap
year. (Leap years are the years evenly divisible by 4.) (There is
an exception for leap years evenly divisible by 40.)