Saki時間からPyongyang時間への変換
12:00:27
+6
18:00:27
+7
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+6
+6
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+5
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-1
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-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
-6
-6
-7
-7
-7
-8
-8
-9
-10