Maarssen時間からBangkok時間への変換
12:49:49
+5
17:49:49
+7
+7
+7
+7
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+6
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+6
+6
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+1
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-1
-1
-1
-1
-1
-1
-2
-5
-5
-5
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-6
-6
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-9