Ravenna時間からChangchun時間への変換
09:10:57
+6
15:10:57
+7
+7
+7
+7
+7
+6
+6
+6
+6
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+3
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+1
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-1
-1
-1
-1
-1
-1
-2
-5
-5
-5
-6
-6
-6
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-8
-9