Piet Retief 시간을 Sunch’ŏn 시간으로 변환
00:12:04
+7
07:12:04
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+3.5
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+3.5
+3
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+2.5
+2
+1.5
+1
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+0
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-1
-1
-1
-1
-1
-1
-1
-2
-2
-5
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-10