Abidjan時間からGirardot City時間への変換
18:58:38
-5
13:58:38
+7
+7
+7
+6.5
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+6
+6
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+5.5
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+3.5
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+3
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+3
+2
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+1
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+1
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+1
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+0
-3
-3
-3
-4
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-4
-5
-5
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-7