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.

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.

[6] The World Calendar Association's last director was Wayne Edward Richardson of Ellinwood, Kansas who died on 29 May 2020.

Economic savings occur from less need to print calendars because only the year number changes.

The main opponents of the World Calendar in the 20th century were leaders of religions that worship according to a seven-day cycle.

For Jews, Christians and Muslims, particular days of worship are ancient and fundamental elements of their faith.

[8] Jews observe Saturday as Shabbat, on the basis of the Decalogue's injunction to "remember the sabbath day, to keep it holy" (Exodus 20:8).

Muslims perform the jumu'ah prayer in Mosques on Fridays, the day they believe Adam was created.

[9] Supporters of the World Calendar do not deny that their system is at odds with the traditions of a significant portion of the world's population, but argue that Worldsdays and Leapyear Days can be treated as "double" holidays by those who wish to maintain the seven-day week sequence.

They differ regarding the first weekday of the week (Sunday vs. Monday), and ISO 8601 does not support intercalary dates (e.g. in notation).