Sepuka時間からKolkata時間への変換
20:54:14
+2.5
23:24:14
+6
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+1
+0.5
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-1
-1
-1
-1
-2
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-2
-2
-2
-2
-3
-3
-3
-6
-6
-6
-6
-7
-8
-8
-8
-9
-11