Piacenza時間からHong Kong時間への変換
15:15:44
+6
21:15:44
+7
+7
+7
+7
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+6
+6
+6
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-1
-1
-1
-1
-1
-1
-2
-5
-5
-5
-6
-6
-6
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-7
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-9