Al Mithnab時間からGoderich時間への変換
19:21:01
-3
16:21:01
+7
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+6
+6
+6
+6
+6
+5
+5
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+2
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+1
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-1
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-1
-1
-2
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-2
-2
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-2
-3
-6
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-10