calendar week numbers week-by-week calendars

how to get the day of the year , what day of the year 2009 is for example august, 29th 2009?

Read our little “Day of the Year” Tutorial and learn how you will get each years day from a given week day, month day or other given date. See also our day of the year calendar 2009, which shows all days of the year numbered, so that you can find out at once the day of the year from a given 2009 date. Nearly each year begins with another week-day, caused by the leap year interruptions and different day counting rules in relation to week numeration and month counting.