Simultaneous auroral observations described in the historical records of China, Japan and Korea from ancient times to AD 1700
D. M. Willis and F. R. Stephenson
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Apr 2013
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Oct 2022
654
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670
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691
1,049
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Jan 2023
706
1,058
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Feb 2023
722
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738
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1,179
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Dec 2023
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Jan 2024
1,213
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Feb 2024
1,222
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Apr 2024
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1,427
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Apr 2025
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1,461
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Jun 2025
1,503
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Jul 2025
1,538
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Aug 2025
1,556
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Sep 2025
1,575
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Oct 2025
1,594
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Nov 2025
1,616
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Latest update: 25 Nov 2025
