With our busy schedules today everyone seems to be in a hurry with little time to retrieve information such as the day of the week of Christmas 2010 or the day of the week the first man landed on the moon on July 20, 1969. The 300 Year Calendar Book will solve these problems fast. Indeed, using this book one could very easily and quickly find any day of the week in the years between 1760 to 2060. Furthermore, if one remembers the constant number of any given month of any year one could determine the day of the week instantly by application of the Koay Calendar Formula. This is the intention of this book. It saves one's time, reduces one's frustration and helps to keep one's blood pressure normal. The authors' goal is to share this convenience with everyone. Over 150 years ago, Dumas stated well "one for all and all for one" in his book The Three Musketeers. The authors admire his philosophy.