Hongch’ŏn時間からKuchera時間への変換
21:53:55
-3.5
18:23:55
+2
+2
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-1
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-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
-1
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-1
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-8
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-12
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-12