Judicial Notice

Court of law is based on facts that needs to be proved. But if all the facts are to be proved, it would take months and years to solve a simplest of case. Thus a certain assumptions and acceptance of the facts are considered as being common knowledge and if it has been gathered from the guaranteed sources like court records, government records for timing of sunset and rise etc.Those are kown as judicial notice which then does not require any official proof of the fact..