更新为自动判断时间格式，WIN7 XP测试通过，WIN8待测试，主要是通过获取百度的相关信息然后跟系统时间进行比较

代码如下:

'VBS校准系统时间 BY BatMan 

Dim objXML, Url, Message 

Message = "恭喜你，本机时间非常准确无需校对！" 

Set objXML = CreateObject("MSXML2.XmlHttp") 

Url = "http://open.baidu.com/special/time/" 

objXML.open "GET", Url, False 

objXML.send() 

Do Until objXML.readyState = 4 : WScript.Sleep 200 : Loop 

Dim objStr, LocalDate 

objStr = objXML.responseText 

LocalDate = Now() 

Set objXML = Nothing 

Dim objREG, regNum 

Set objREG = New RegExp 

objREG.Global = True 

objREG.IgnoreCase = True 

objREG.Pattern = "window.baidu_time\((\d{13,})\)" 

regNum = Int(objREG.Execute(objStr)(0).Submatches(0)) /1000 

Dim OldDate, BJDate, Num, Num1 

OldDate = "1970-01-01 08:00:00" 

BJDate = DateAdd("s", regNum, OldDate) 

Num = DateDiff("s", LocalDate, BJDate) 

If Abs(Num) >=1 Then 

Dim DM, DT, TM, objSHELL 

DM = DateAdd("S", Num, Now()) 

DT = DateValue(DM) 

TM = TimeValue(DM) 

If InStr(Now, "午") Then 

Dim Arr, Arr1, h24 

Arr = Split(TM, " ") 

Arr1 = Split(Arr(1), ":") 

h24 = Arr1(0) 

If Arr(0) = "下午" Then 

h24 = h24 + 12 

Else 

If h24 = 12 Then h24 = 0 

End If 

TM = h24 & ":" & Arr1(1) & ":" & Arr1(2) 

End If 

Set objSHELL = CreateObject("Wscript.Shell") 

objSHELL.Run "cmd /cdate " & DT, False, True 

objSHELL.Run "cmd /ctime " & TM, False, True 

Num1 = Abs(DateDiff("s", Now(), BJDate)) 

Message = "【校准前】" & vbCrLf _ 

& "标准北京时间为：" & vbTab & BJDate & vbCrLf _ 

& "本机系统时间为：" & vbTab & LocalDate & vbCrLf _ 

& "与标准时间相差：" & vbTab & Abs(Num) & "秒" & vbCrLf & vbCrLf _ 

& "【校准后】" & vbCrLf _ 

& "本机系统时间为：" & vbTab & Now() & vbCrLf _ 

& "与标准时间相差：" & vbTab & Num1 & "秒" 

Set objSHELL = Nothing 

End If 

WScript.Echo Message