การแปลงเวลาDerryเป็นเวลาRiyadh
08:50:36
+3
11:50:36
+7
+7
+7
+6.5
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+6
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+5.5
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+5.5
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+5
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+4.5
+4
+3.5
+3
+3
+3
+3
+3
+3
+3
+2
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+1
+1
+1
+1
+1
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+0
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-3
-3
-3
-3
-4
-5
-5
-5
-6
-8