Determination of the day of the week possible to do all the calculations in one's head with a little practice). None of the methods given here perform range checks, so unreasonable dates will produce erroneous results. Every seventh day in a month has the same name as the previous: "Corresponding months" are those months within the calendar year that start on the same day of the week. For example, September and December correspond, because September 1 falls on the same day as December 1. Months can only correspond if the number of days between their first days is divisible by 7, or in other words, if their
National Poetry Month consultation with the National Poetry Day partners: in 2015, National Poetry Day falls on October 8 and the theme is Light. Since 1999, National Poetry Month has been celebrated each April in Canada, where it is sponsored by the League of Canadian Poets and organized around a different annual theme. In 1999, UNESCO (the United Nations Educational, Scientific and Cultural Organization) declared March 21 to be World Poetry Day. The purpose of the day is to promote the reading, writing, publishing and teaching of poetry throughout the world and, as the UNESCO session declaring the day says, to "give fresh