Jinka時間からBolpur時間への変換
+6
+6
+6
+6
+6
+5
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+5
+5
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+5
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+5
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+5
+4
+4
+4
+3.5
+3
+3
+3
+3
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2
+2
+1.5
+1
+0.5
+0
+0
+0
+0
+0
+0
+0
-1
-1
-1
-1
-2
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-2
-2
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-2
-3
-3
-6
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-11