Calendar is a conventional time reckoning, accepted in the particular culture. It divides time into periods of repetitive cycles, associated with the cycles of nature. The name comes from the Roman word “calends“, other sources give different origin of the word – Latin “callendarium“.
According to Wikipedia a photo book or photobook is a book in which photographs make a significant contribution to the overall content. Nowadays – with the development of digital cameras and the Internet – everyone can be a photographer, capturing every special moment in life with a camera or smartphone.