Conversione dell'ora da Perm a Surat
21:57:36
+0.5
22:27:36
+6
+6
+4
+4
+4
+4
+4
+3
+3
+3
+3
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+2
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+2
+1.5
+1
+1
+1
+1
+0.5
+0.5
+0.5
+0.5
+0.5
+0.5
+0.5
+0.5
+0.5
+0.5
+0
+0
-1
-2
-2
-2
-2
-2
-2
-2
-3
-3
-3
-3
-4
-4
-4
-4
-4
-4
-5
-5
-5
-8
-8
-8
-8
-9
-9
-10
-10
-11
-12