Abidjan時間からHereford時間への変換
04:39:54
-5
23:39:54
+7
+7
+7
+6.5
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+6
+6
+6
+5.5
+5.5
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+5.5
+5.5
+5.5
+5.5
+5.5
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+5
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+3.5
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+3
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+3
+3
+3
+3
+2
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+2
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+1
+1
+1
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+1
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+0
-3
-3
-3
-4
-4
-4
-5
-5
-6
-7