With the rise of information technology and especially the Internet, various types of calendars have been produced every day to facilitate human life. However, one problem associated with calendars is that people don't pay enough attention to them. Every day when we read a newspaper or a magazine, there are always ads for various types of calendars and shops that sell them. But the thing is, these calendars are not very useful because they are just colorful pages that contain lots of numbers.
Calendars were resorted to in the ancient time with a different nature than they have been used today. Beside the idea of recording days and years, there was another meaning for them. They reflected somehow how people perceived their own time during that period. In other words, it reflected how they lived their lives throughout the year.