Calendars are an integral part of every person, household and company. Their function is not only informative, but also advertising and promotional. Calendars help us plan our schedule and make plans for the future. Table calendars in A4, A5 or DL format with wire calendar binding are typical for companies. Hanging calendars in A2, A3, A4 or A5 formats are more typical for households or meeting rooms of companies or receptions, where they have an informative and promotional function thanks to the images. These calendars use a wire calendar binding with a hook for hanging or a sewn binding with a hole for hanging. The weight of the paper varies from 135 g/m2, through 150 g/m2, 170 g/m2 to 300 g/m2 chalk paper. This weight usually depends on the number of sheets. Most often, these are monthly calendars with 12 or 13 sheets, or weekly calendars with 53 to 55 sheets or fortnightly calendars with 27 to 29 sheets.