Cairo 시간을 Gretna 시간으로 변환
04:36:11
-8
20:36:11
+6
+6
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+2
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+1.5
+1
+0.5
+0
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+0
-1
-1
-2
-2
-2
-2
-2
-2
-2
-3
-3
-6
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-6
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-10