Inventions

When was the calendar invented? No specific date or period has been determined for the invention of the calendar, since it is believed that humans around the world have used different means to mark the cycles of nature throughout time.
 * [[image:1947Calendar.jpg width="280" height="196"]] || [[image:old-calendar.jpg width="320" height="178"]] ||
 * [[image:calendar-5.jpg width="190" height="353"]] || [[image:6a00e008c9f15d883401156f335809970c-450wi.jpg width="370" height="277"]] ||
 * [[image:old_calendar.jpg width="248" height="160"]] || [[image:HPIM1514.JPG width="365" height="585"]] ||
 * [[image:1956calendar_2.jpg]] || [[image:scan_nouvel_an.jpg width="260" height="320"]] ||
 * [[image:4d277147e0efb.jpg width="320" height="240"]] || [[image:4d277186450f3.jpg width="384" height="288"]] ||