Brits時間からKolkata時間への変換
21:08:13
+3.5
00:38:13
+7
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+7
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+6
+6
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+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3.5
+3
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+2
+1.5
+1
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-1
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-1
-1
-1
-1
-1
-2
-2
-5
-5
-5
-5
-6
-7
-7
-7
-8
-10