Hayling Island時間からJogonalan時間への変換
21:18:28
+7
04:18:28
+7
+7
+7
+6.5
+6
+6
+6
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+5.5
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+3.5
+3
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+2
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+1
+1
+1
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-3
-3
-3
-3
-4
-5
-5
-5
-6
-8