P’yŏngsŏng時間からTangshan時間への変換
20:31:47
-1
19:31:47
+1
+1
+0
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-1
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-1
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-1
-1
-1
-1
-1
-1
-1
-1
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-1
-1
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-1
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-1
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-12
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-12