การแปลงเวลาDouglasเป็นเวลาSambrial
05:57:30
+4
09:57:30
+7
+7
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+5.5
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+4.5
+4
+4
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+2
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+1
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+0
+0
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-1
-4
-4
-4
-4
-5
-5
-6
-6
-7
-8