Port Alfred時間からKolkata時間への変換
12:06:23
+3.5
15:36:23
+7
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+3.5
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+3.5
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+1.5
+1
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-1
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-1
-1
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-2
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-5
-5
-5
-5
-6
-7
-7
-7
-8
-10