| Genealogy Tools - Dates and Calendars | |
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DAYS Calendar Program for Genealogists
A freeware program available for download which is designed to assist genealogists in finding dates of named days and navigate in and between the Julian and Gregorian calendars.
Days of the Week
The history of the seven day week and the naming of the days.
Format of Dates
Would you write January 31, 1999 as 1/31/99 or 31/1/99 or 31.1.00? This essay discusses the confusion these various date formats can cause and introduces the International Date Format.
Genealogy Calendar Confusions
From American Plantations and Colonies, an explanation of the date confusions resulting from the transition from the "Old Style" to "New Style" calendar by various countries between 1582 and 1752.
Genealogy in France: Republican Calendar
This calendar was in used in France from 1793 to 1805, and 1871 (only in Paris). The two tables on this page will help you to local the equivalent date in the Gregorian (modern) Calendar .
Judaism 101: The Jewish Calendar
From the online encyclopedia of Judaism, this is an excellent overview of the Jewish calendar.
Julian and Gregorian Calendars
The Julian Calendar, the Gregorian reform and its adoption, astronomical year numbering, the Julian and the Gregorian Proleptic Calendars, and the accuracy of calendars.
Julian Day Numbers
The nature and origin of the Julian day number system, by Peter Meyer.
Leap Years
Information Leaflet No. 48, from the Royal Observatory Greenwich, London.
Months and Their Meanings
A history of the months and the meanings of their names.
Regnal Chronologies
Chronologies of worldwide royal reigns, arranged geographically.
Roman Numerals
An explanation of Roman numerals along with hints to aid you in reading them.
Source Guide™ - French Republican Calendar
A research outline from the LDS Church Family History Center which explains the French Republican (also known as Revolutionary) Calendar, including how to convert dates to Gregorian.
This Day in History
The top stories from the news, Wall Street, automotive, Civil War, and technology history for today's date, brought to you by the History Channel.
Today in History From American Memory Best of the Net
The Library of Congress presents a wonderful essay each day on historical events of today's date, including links to additional information on the American Memory site. Includes archives of all past essays.
Types of Calendar
There are over 40 calendars currently in use which usually attempt to accord either with the solar cycle (seasons) or with the lunar cycle (moon) or with both.
Universal Calendar Creator
This software program from Cumberland Family Software can display and convert between 13 different calendars.
VMax Calendar Converter
A Java applet program which converts Julian calendar dates to Gregorian calendar dates and vice-versa. It takes into account which date each of the countries converted to Gregorian.
Western-Chinese Calendar Converter
Includes information on the Chinese Lunar/Solar calendar.
What Time is It?
80 countries contribute to UTC (Universal Coordinated Time) which is calculated in Sevres in France and is accurate to within one second.
When Does the New Millenium Begin?
It depends on which system you use for numbering years, and this article explains it beautifully!