Everybody in the world always makes use of it everyday,we need it in other to book appointment,know our moivement,its used to determine duration and periods,infacts its uses are unending,its what everyone has in his or her house but non has has ever gone to the market to buy a ,for personal use. If atal some people do it in other part of the, it doesn't happen here in Nigeria
Ok let me ask Have you ever gone to the market to buy a calender before?