Saint Petersburg時間からOnsŏng時間への変換
13:15:30
+6
19:15:30
+6
+6
+6
+6
+6
+5
+5
+5
+5
+5
+5
+5
+5
+5
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+3.5
+3
+3
+3
+3
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2.5
+2
+2
+1.5
+1
+0.5
+0
+0
+0
+0
+0
+0
+0
-1
-1
-1
-1
-2
-2
-2
-2
-2
-2
-3
-3
-3
-6
-6
-6
-6
-7
-8
-8
-8
-9
-11