Editing World Calendar (section)

== Background and history ==
The World Calendar has its roots in the proposed calendar of the Abbot [[Marco Mastrofini]], a proposal to reform the Gregorian calendar year so that it would always begin on Sunday, 1 January, and would contain equal quarters of 91 days each. The 365th day of the [[Solar cycle (calendar)|solar cycle]] would be a year-end, "intercalary" and optionally holiday. In leap years, a second "intercalary day" follows Saturday, 30 June.

Around 1887 French astronomer Gaston Armelin proposed [[Armelin's calendar|a calendar]] based on this idea and roughly identical to the World Calendar.

[[Elisabeth Achelis]] founded The World Calendar Association (TWCA) in 1930 with the goal of worldwide adoption of the World Calendar. It functioned for most of the next twenty-five years as The World Calendar Association, Inc. Throughout the 1930s, support for the concept grew in the [[League of Nations]],<ref>{{cite book|url=http://biblio-archive.unog.ch/Dateien/CouncilMSD/C-667-M-267-1923-VIII_EN.pdf|last=League of Nations|title=Reform of the calendar|date=20 October 1923|location=Geneva|pages=8–11, 15–16, 31–32}}</ref> the precursor of the United Nations. Achelis started the Journal of Calendar Reform in 1931, publishing it for twenty-five years,<ref>Journal of Calendar Reform, published and distributed quarterly 1930–1955 by The World Calendar Association</ref> and wrote five books<ref>THE WORLD CALENDAR – Addresses and Occasional Papers Chronologically Arranged on the Progress of Calendar Reform Since 1930 – by Elisabeth Achelis (G.P. Putnam's Sons, 1937);<br/>
THE CALENDAR FOR EVERYBODY by Elisabeth Achelis (G.P. Putnam's Sons, 1943);<br/>
THE CALENDAR FOR THE MODERN AGE by Elisabeth Achelis (Thomas Nelson & Sons, 1951);<br/>
OF TIME AND THE CALENDAR by Elisabeth Achelis (Hermitage House Inc., New York and George J. McLeod, LTD., Toronto, Canada, 1955);<br/>
Autobiography BE NOT SILENT by Elisabeth Achelis (Pageant Press, Inc., 1961)</ref> on the calendar concept.

Following World War II, Achelis solicited worldwide support for the World Calendar. As the movement gained international appeal with legislation introduced in the United States Congress, awaiting international decisions, Achelis accepted advice that the United Nations was the proper body to act on calendar reform. At the United Nations in 1955, the United States significantly delayed universal adoption by withholding support "unless such a reform were favoured by a substantial majority of the citizens of the United States acting through their representatives in the Congress of the United States." Also, Achelis wrote in 1955 (JCR Vol. 25, page 169), "While Affiliates and Committees have over the years and still are able to approach all branches of their governments, the Incorporated (International) Association was prevented from seeking legislation in the United States lest it lose its tax exempt status. Because of this I have been prevented from doing in my own country that which I have been urging all other Affiliates to do in theirs."

By 1956, she dissolved The World Calendar Association, Incorporated. It continued as the International World Calendar Association through the rest of the century with several directors including Molly E. Kalkstein, who is related to Achelis, and who provided the Association's first official website during her 2000–2004 tenure. The association reorganised in 2005 as The World Calendar Association, International.<ref>{{Cite web|title=The World Calendar Association|url=http://www.theworldcalendar.org/|archive-url=https://archive.today/20121205022845/http://www.theworldcalendar.org/|url-status=dead|archive-date=5 December 2012|website=The World Calendar Association}}</ref> It was last active on 2013 as it had resumed efforts towards adoption of the World Calendar in 2017 and 2023.<ref>{{Cite web|title=WELCOME to The World Calendar In 2017.org|url=http://www.theworldcalendarin2017.org/Index.htm|archive-url=https://web.archive.org/web/20131207063812/http://www.theworldcalendarin2017.org/Index.htm|url-status=dead|archive-date=7 December 2013}}</ref> The World Calendar Association's last director was Wayne Edward Richardson of [[Ellinwood, Kansas]] who died on 29 May 2020.<ref>{{cite web|title=Wayne Edward Richardson|url=https://www.minnischapel.org/obituary/Wayne-Richardson|access-date=1 May 2021}}</ref>