Istanbul時間からLevin時間への変換
11:13:28
+9
20:13:28
+7
+7
+6
+6
+6
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+6
+5
+5
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+0
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-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
-6
-6
-7
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-7
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-10