National Diet Library (NDL), "The Japanese Calendar", "Calendar history/The Source"; NengoCalc, "(596) 推古 Suiko"Archived 2016-08-13 at the Wayback Machine; online conversion of Japanese dates into their Western equivalents. based on tables from Paul Yachita Tsuchihashi. (1952). Japanese Chronological Tables from 601 to 1872 A. D. (邦暦西暦対照表) and Reinhard Zöllner (2003), Japanische Zeitrechnung; retrieved 2012-11-14.
National Diet Library (NDL), "The Japanese Calendar", "Calendar history/The Source"; NengoCalc, "(596) 推古 Suiko"Archived 2016-08-13 at the Wayback Machine; online conversion of Japanese dates into their Western equivalents. based on tables from Paul Yachita Tsuchihashi. (1952). Japanese Chronological Tables from 601 to 1872 A. D. (邦暦西暦対照表) and Reinhard Zöllner (2003), Japanische Zeitrechnung; retrieved 2012-11-14.
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National Diet Library (NDL), "The Japanese Calendar", "Calendar history/The Source"; NengoCalc, "(596) 推古 Suiko"Archived 2016-08-13 at the Wayback Machine; online conversion of Japanese dates into their Western equivalents. based on tables from Paul Yachita Tsuchihashi. (1952). Japanese Chronological Tables from 601 to 1872 A. D. (邦暦西暦対照表) and Reinhard Zöllner (2003), Japanische Zeitrechnung; retrieved 2012-11-14.