Cairo 시간을 Grytviken 시간으로 변환
02:21:50
-5
21:21:50
+7
+7
+6
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+6
+5
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+5
+5
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+5
+5
+5
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+4
+4
+4
+3.5
+3
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+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
+0
+0
-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
-6
-6
-7
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-7
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-10