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
Cyber Monday Romania, Cyber Monday is the first Monday after Black Friday, which is held by the biggest retailers one week before the US Black Friday. In Sweden Cyber Monday is growing rapidly and several of the largest online retailers regularly launch Cyber Monday campaigns. Cyber Monday was first established on larger online retailers in Sweden 2010. According to a 2009 "The Guardian" article, UK online retailers are now referring to "Cyber Monday" as the busiest internet shopping day of the year that commonly falls on the same day as the US Cyber Monday. Beginning at 7 pm AEDT on November 20