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For an original type of sundial that I invented, see my following article:
- Jamie Michelle Carney, "The Hemispherical Solar Observatory", Dec. 24, 2025, https://carneyjamie.substack.com/p/the-hemispherical-solar-observatory , https://archive.today/WtgZW , https://beta.cent.co/JamieCarney/+tosipy , https://megalodon.jp/2026-0315-0742-30/beta.cent.co/JamieCarney/+tosipy .