Den Helder時間からSurat時間への変換
18:23:51
+3.5
21:53:51
+7
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+3.5
+3.5
+3.5
+3.5
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+3
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-1
-1
-1
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-2
-5
-5
-5
-6
-6
-6
-7
-7
-8
-9