Two Calendars of Lucky and Unlucky Days.

From 'Time's Alteration' (UCL Press/Taylor & Francis), 1998

An outline of the western calendar, designed to explain how it began, why it appears so complicated, and why reform was so controversial. Includes an explanation of why Easter keeps moving around. Originally a chapter from my book 'Time's Alteration', this also formed the chapter on 'The Calendar' in the Scribner 'Dictionary of Early Modern Europe'.

In Jewish mystical thought dates are revealing as in the cse of the ninth of Av, on July 26th this year. According to a line of orthodox teaching the destruction of the first and second temples in Jerusalem occurred on this date, surely a 'coincidence' by any rational standard. In my view there are far too many of such 'coincidences in history, one being the fact that of the first five presidents of the United States three of them died on July the Fourth (Thomas Jefferson, John Adams and James Monroe) with Adams and Jefferson leaving this world on the same day in 1826, united in death as they had not been in life. This document covers the first segment of a book entitled DATES AND SEASONS, which explores among other subjects attempts by leading theorists such as C. G Jung to explore the phenomenonon of synchronicity or 'meaningful coincidences.'

in K. Radner and E. Robson (eds.), The Oxford Handbook of Cuneiform Culture (Oxford: Oxford University Press, 2011), 470-485

What is a calendar? In its broadest terms, today the term 'calendar' is used to describe a system governing the division of time into intervals (generally days, months, and years) that can be navigated to provide a frame of reference for temporal events. It can also refer to a document (a pocket or desk diary, a wall calendar, etc.) divided into sections for each day, which can be used to record past events that took place on a specifi c occasion and to keep track of future appointments and provide reminders of coming holidays, birthdays, or dates when bills must be paid. But in other cultures the idea of a calendar can include diff erent astronomical and social activities from those we are familiar with from our own calendar. For example, in ancient and medieval China the term li 曆, which is usually translated into English as 'calendar' , encompasses not only the production of what we might think of as a calendar, but refers to a complete astronomical system for predicting astronomical events, including eclipses of the sun and moon and planetary phenomena, as well as the dates of month beginnings. Whilst a li provides a framework for keeping track of days it also has other uses, not the least of which is in regulating the heavens through the prediction of astronomical phenomena, reducing the number of unexpected, and therefore ominous, astronomical events (Sivin 2009 : 37) .

The Christian Calendar, 2024

Discover in this unique calendar the principle Christian events suggested in the Bible, namely Passover and Pentecost. Included are also all the 7 Sabbaths of Sabbaths (Feasts or Holy Convocations), which have today rather a local (Israel) and former character. This calendar is the fruit of many preceding studies, only to mention the study on Noah's Flood which clearly confirmed a 360 day-year with 12 months of 30 days, to further mention the study on Christ's Passover Chronology which revealed Christ having died on day 6 of Passover and finally confirming the correct day of the First Fruits counting toward Pentecost, and of course the study 'Sabbaths' with the basic definition of a biblical week which begins on the day after the Weekly Sabbath, the biblical first day of the week (modern Sunday as officially followed by ~55% of the world's population). | Methodology & Overview of Works: www.fitforfaith.ca/overview | Sources are linked within the PDF document. All Rights Reserved.

Oxford Handbook of Media, Technology, and Organization Studies. London: Oxford University Press, 2020

This chapter dwells on the calendar and more specifically on personal time management systems as a technology that mediates between the organization and the individual. The calendar is discussed as a technical medium of standardization and modularization as well as a medium of cultural synchronization, which provides an interface between the demands of an organization and those of its employees. Following Weber's claim on the interrelatedness of capitalism and the Christian conduct of life, the calendar is discussed as a medium of Protestantism and as an integral part of the media and cultural history of the rationalization of the self.

Cambridge …, 2008

Since the aforementioned types of calendar apparently co-existed, they probably served different purposes in Egyptian society. The practical nature of the civil calendar most likely made it the ideal and principal timekeeping system of everyday business in the administrative and economic spheres. The lunar calendar, on the other hand, would have been helpful in predicting lunar phases and also those astronomical events which recurred on a yearly basis (the lunar New Year did not wander around the seasons, as the civil New Year did). Astronomical phenomena were linked with the change of seasons and were thus very important for the religious life of the Egyptians, and for securing the continuation of life in general. These aspects are combined in the celebration of the feast dates (Helck et al. 1975-92, II, 171-91).

An Account of How the Gregorian Calendar was introduced, or nearly introduced, into the Churches of Russia, Greece and Romania

2020

Only a list of algorithms in computational mathematics, computer science and other areas of science is comparable in page volume to the volume of this article or even more. However, many misunderstandings and misconceptions in world calendars are caused by the issue of intercalation of one or another calendar. To solve this problem, I individually developed such an algorithm for intercalation for calendars (Kambar Algorithm) and as you can see, this algorithm works well. Since until today there was no clear picture of the intercalation of the 76-year lunisolar calendar, the author presents the intercalation he developed in two versions. This intercalation is closely related to the legendary 10-month calendar of the ancient Romans (or Romula's calendar), which contains the numbers 91, 304 and 364.

Mathematics in Schools, 1998

A magazine article. Includes a review (originally published elsewhere) of Dershowitz and Reingold's lunatic 'Calendrical Calculations', an ambitious and ill-fated attempt to harmonise every calendar known to history on digital principles.