[2] [CITE@en-US[calendars@groups.io | Home]], [TIME[2023-08-09T06:06:01.000Z]] <https://groups.io/g/calendars>

[1] [CITE[Symmetry454 and Symmetry010 Calendars, Kalendis Calculator, and more]], [[Dr. Irv Bromberg, University of Toronto, Canada]], [TIME[2022-07-17T04:51:40.000Z]], [TIME[2023-08-09T06:05:47.689Z]] <http://individual.utoronto.ca/kalendis/>