| 摘要 |
The invention relates to a calendar having a sheet division geared to certain time segments, e.g. days, a plurality of time segments being simultaneously in the observer's field of vision, and it being possible for the individual sheets to be stacked one upon the other. In each calendar sheet, one or two window-like perforations with two mutually flush parallel lateral edges are arranged offset relative to each other, so that a calendar sheet segment of a predetermined and always constant number of calendar sheets following the upper calendar block is visible through the perforation of the top calendar sheet and can be coated with a medium which reproduces information.
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