Wall calendars are very popular, because they are easy to use, and their aesthetic value in our time makes them a wonderful decoration for the house. There are three main types of wall calendars. Posters are the cheapest variant after pocket calendars, they are very popular. Quarterly calendars are the most convenient, as you can see three months at once. Any solid office uses similar calendars. It is convenient to plan, calculate looking at quarterly calendars. Flip-flop calendar the most beautiful of the kind. In January 2018 calendar may be a good business present to your counterparts.