Gregorian calendar: References & Edit History

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Article History

Type Description Contributor Date
Modified link of Web site: NPR - The science and shared history behind the Gregorian and Chinese calendars. May 01, 2026
Add new Web site: The Galileo Project - The Gregorian Calendar. Apr 02, 2026
Article revised and updated. Feb 24, 2026
Fixed display issue. Dec 15, 2025
Added description to media. Dec 12, 2025
Added media. Dec 11, 2025
Fixed display issue. Dec 11, 2025
Media added. Oct 02, 2025
Add new Web site: NPR - The science and shared history behind the Gregorian and Chinese calendars. May 16, 2025
Questions and answers added. Feb 18, 2025
Add new Web site: Encyclopedia Virginia - The Gregorian Calendar. Feb 12, 2025
Add new Web site: History Today - The Gregorian Calendar Adopted in England. Dec 19, 2024
Add new Web site: Johns Hopkins University Applied Physics Laboratory - The 400th Anniversary of the Gregorian Calendar. Oct 23, 2024
Add new Web site: Live Science - The Gregorian calendar: Why we have Leap years and April Fools' Day. Jun 18, 2024
Add new Web site: Academia - The Imposing of the Gregorian Calendar and its Impact on Levantine Christians: Local Dynamics and Foreign Interferences (1858-1864). Mar 05, 2024
Media added. Jan 26, 2024
Add new Web site: Connecticut State Library - Calendars. Oct 18, 2023
Add new Web site: Ancient Origins - New Year, Old Calendar: The Origins and Controversy of the Gregorian Calendar. Jun 20, 2023
Article revised and updated. Apr 19, 2021
Add new Web site: ThoughtCo. - Gregorian Calendar. May 11, 2018
Add new Web site: BBC Sounds - Witness History - The trial of John Demjanjuk. Apr 13, 2018
Media added. May 04, 2010
Added new Web site: The Galileo Project - The Gregorian Calendar. Jan 03, 2008
Article revised and updated. Jun 15, 2006
Article added to new online database. Jul 20, 1998
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