Authors
Advisor(s)
Abstract(s)
A ordenação do tempo tem uma importância crucial
na vida das pessoas e das nações, determinando os ritmos da
ação individual e as relações entre povos e culturas. O
calendário do velho Continente, hoje adotado por todos os
países do Planeta no âmbito das relações económicas e
políticas, conheceu múltiplas vicissitudes ao longo do seu
percurso histórico. Para uma compreensão básica da nossa
matriz cultural é indispensável o conhecimento dos aspetos
mais determinantes desse instrumento fundamental de
regulação da atividade humana.
Este artigo pretende contribuir para essa
compreensão, proporcionando uma breve síntese dos
principais antecedentes históricos que marcaram o percurso do
atual calendário e disponibilizando um conjunto de
ferramentas e resultados derivados do algoritmo de Gauss para
determinação da data da Páscoa, cuja variabilidade se
repercute na data de outras celebrações. Analisa-se ainda,
graficamente, a variação do período diurno ao longo do ano.
Time ordering is of crucial importance in the lives of both individuals and nations, as it determines the rhythmic patterns of individual action and the relations between peoples and cultures. The calendar of the Old Continent, nowadays adopted by all countries on the planet within economical and political relations, has met with many vicissitudes in the course of its history. For a basic understanding of our cultural matrix it is essential to have good knowledge of the most determining aspects of this fundamental instrument for the regulation of human activity. This paper aims to contribute for this understanding, by giving a brief synthesis of the most important historical background for our present day calendar and by offering a set of tools and results proceeding from Gauss Algorithm for Easter Sunday date calculation, whose variability influences the date for other celebrations. We also analyse, by means of graphs, the day length variation throughout the year.
Time ordering is of crucial importance in the lives of both individuals and nations, as it determines the rhythmic patterns of individual action and the relations between peoples and cultures. The calendar of the Old Continent, nowadays adopted by all countries on the planet within economical and political relations, has met with many vicissitudes in the course of its history. For a basic understanding of our cultural matrix it is essential to have good knowledge of the most determining aspects of this fundamental instrument for the regulation of human activity. This paper aims to contribute for this understanding, by giving a brief synthesis of the most important historical background for our present day calendar and by offering a set of tools and results proceeding from Gauss Algorithm for Easter Sunday date calculation, whose variability influences the date for other celebrations. We also analyse, by means of graphs, the day length variation throughout the year.
Description
Keywords
Civilização Tempo Algoritmo Calendário
Citation
Lopes, Maria do Céu (2012). O Calendário Atual. História, algoritmos e observações. Millenium, 43 (junho/dezembro). Pp. 107-125.