Cairo 시간을 Philadelphia 시간으로 변환
23:19:56
-7
16:19:56
+7
+7
+6
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+6
+6
+6
+5
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+5
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+5
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+5
+5
+5
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+5
+5
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+5
+5
+5
+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
+0
+0
-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-6
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-6
-7
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-7
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-10