Ten unusual sundials: Samrat Yantra in Jaipur, Delhi and Ujjain, the modern Gunma replica, the Greenwich Dolphin Dial, Tower Hill, Taihedian in Beijing, Sundial Bridge in Redding, the Holyrood polyhedral sundial and Wilanow Palace. Licensed photographs identify the instruments. This is a selection, not an accuracy ranking. The Redding bridge indicates time with limits on hours and seasons. Samrat Yantra in Jaipur: Vssun; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:Jantar_Mantar%2C_Jaipur_-_Samrat_Yantra.jpg; resized and fitted to portrait frame; derived image retains the source license. Samrat Yantra in Delhi: Varun Shiv Kapur from New Delhi, India; CC BY 2.0; https://creativecommons.org/licenses/by/2.0/; https://commons.wikimedia.org/wiki/File:Samrat_Yantr_at_Jantar_Mantar%2C_Delhi_%287987722563%29.jpg; resized and fitted to portrait frame; derived image retains the source license. Samrat Yantra in Ujjain: Bernard Gagnon; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:Vedh_Shala%2C_Ujjain_02.jpg; resized and fitted to portrait frame; derived image retains the source license. Samrat Yantra at Gunma: 禁樹なずな; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:Samrat_Yantra_of_GAO.jpg; resized and fitted to portrait frame; derived image retains the source license. Dolphin Sundial: Txllxt TxllxT; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Greenwich_-_Royal_Observatory_-_Sundial_Dolphins_1977_by_Christopher_St_J_Daniel_-_View_North.jpg; resized and fitted to portrait frame; derived image retains the source license. Tower Hill Sundial: AndyScott; CC0 1.0; https://creativecommons.org/publicdomain/zero/1.0/; https://commons.wikimedia.org/wiki/File:View_of_the_Tower_Hill_Sundial.jpg; resized and fitted to portrait frame; derived image retains the source license. Sundial at Taihedian: Mummyyx; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:%E5%A4%AA%E5%92%8C%E6%AE%BF%E5%A4%96%E7%9A%84%E6%97%A5%E6%99%B7.JPG; resized and fitted to portrait frame; derived image retains the source license. Sundial Bridge: Tequask; CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/; https://commons.wikimedia.org/wiki/File:Sundial_Bridge_Tower_and_Plaza.jpg; resized and fitted to portrait frame; derived image retains the source license. Holyrood Polyhedral Sundial: Daniel Kraft; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:Holyrood_Palace_icosahedron_20211021.jpg; resized and fitted to portrait frame; derived image retains the source license. Wilanow Palace Sundial: Chepry 💬 ( Andrzej Barabasz ) 📷 🇵🇱; CC BY-SA 3.0; https://creativecommons.org/licenses/by-sa/3.0/; https://commons.wikimedia.org/wiki/File:Cadran_solaire_Wilan%C3%B3w_01_AB.jpg; resized and fitted to portrait frame; derived image retains the source license.