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
Date and time notation in Serbia by comma, but can be abbreviated to the first three letters, which are then capitalized (NED, 31. 12. '06) – note that in that case, the shortest date format is used. Starting day of the week is Monday, and the weekend falls on Saturday and Sunday. Weeks are rarely referred to by their order in the year, although they are always printed in large format calendars, typically the number of a week in the month is used (third week in March, instead of week 12).' One of most common errors while typing the date with the full month name is