Hadali時間からPyongyang時間への変換
16:52:54
+4
20:52:54
+5
+5
+4
+4
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+3
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-1
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-2
-2
-2
-2
-2
-2
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-2
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-3
-4
-4
-4
-4
-4
-4
-5
-8
-8
-8
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-12