Saint Petersburg時間からSongyang時間への変換
14:40:08
+5
19:40:08
+6
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+5
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+3
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+2.5
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+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2
+2
+1.5
+1
+0.5
+0
+0
+0
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-1
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-6
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-11