-set DATEL=%date:~10,4%_%date:~4,2%_%date:~7,2%%\r
-set TIMEL=%time:~0,2%_%time:~3,2%\r
-set TIMESTAMP=%DATEL%_%TIMEL%\r
+set startDate=%date%\r
+set startTime=%time%\r
+set sdy=%startDate:~10%\r
+set /a sdm=1%startDate:~4,2% - 100\r
+set /a sdd=1%startDate:~7,2% - 100\r
+set /a sth=%startTime:~0,2%\r
+set /a stm=1%startTime:~3,2% - 100\r
+set /a sts=1%startTime:~6,2% - 100\r
+set TIMESTAMP=%sdy%_%sdm%_%sdd%_%sth%_%stm%\r
+\r