In Darkness (2017) 1h 50min | Thriller | 2017 (UK) A blind musician hears a murder committed in the apartment upstairs from hers that sends her down a dark path into London's gritty criminal underworld.
For other uses, see Calendar (disambiguation). For the Gregorian calendar for this year, see Leap year starting on Friday. A calendar is a system of organizing days for social, religious, commercial or administrative purposes. This is done by giving names to periods of time, typically days, weeks, months, and years. A date is the designation of a single, specific day within such a system. A calendar is also a physical record (often paper) of such a system.
Who Invented The Calendar ? The Calendar is a system for arranging the year into days, weeks and months. Lunar Calendar. Historians donot know who or when mankind invented the first calendar, probably early man when he first carved a notch into a stick or a bone which marked the passing of each full moon. Notched bones used to record moon phases have been found in Africa and Europe dating back to about 20,500 BC.