Borrowing from the technique in tip 9383, I have scripted WhenPwdExp.bat to set an environment variable to a user's password expiration date, and a user's password expiration time.

The syntax for using WhenPwdExp.bat is:

WhenPwdExp UserDN DateExp TimeExp

Where:

UserDN  is a user's distinguished Name, like "CN=Jerold Schulman,CN=Users,DC=JSIINC,DC=COM".                              DateExp is a call directed environment variable that will contain UserDN's password expiration date.                              TimeExp is a call directed environment variable that will contain UserDN's password expiration time.
NOTE: if the password is set to never expire, DateExp and TimeExp are set to NEVER.

WhenPwdExp.bat contains:

@echo Off                              if \{%3\}==\{\} @echo Syntax: WhenPwdExp UserDN DateExp TimeExp&goto :EOF                              if exist "%TEMP%\WhenPwdExp.vbs" goto doit                              @echo Dim objArgument, oDomain, oUser, maxPwdAge, numDays, PwdX, strDomainDN, strUserDN, OK>"%TEMP%\WhenPwdExp.vbs"                              @echo Set objArgument = Wscript.Arguments>>"%TEMP%\WhenPwdExp.vbs"                              @echo strDomainDN =objArgument^(0^)>>"%TEMP%\WhenPwdExp.vbs"                              @echo strUserDN = strDomainDN ^& "/" ^& objArgument^(1^)>>"%TEMP%\WhenPwdExp.vbs"                              @echo Set oDomain = GetObject^("LDAP://" ^& strDomainDN^)>>"%TEMP%\WhenPwdExp.vbs"                              @echo Set maxPwdAge = oDomain.Get^("maxPwdAge"^)>>"%TEMP%\WhenPwdExp.vbs"                              @echo numDays = CCur^(^(maxPwdAge.HighPart * 2 ^^ 32^) + maxPwdAge.LowPart^) / CCur^(-864000000000^)>>"%TEMP%\WhenPwdExp.vbs"                              @echo Set oUser = GetObject^("LDAP://" ^& strUserDN^)>>"%TEMP%\WhenPwdExp.vbs"                              @echo PwdX = DateAdd^("d", numDays, oUser.PasswordLastChanged^)>>"%TEMP%\WhenPwdExp.vbs"                              @echo OK=oUser.userAccountControl AND 65536>>"%TEMP%\WhenPwdExp.vbs"                              @echo if OK = 65536 Then>>"%TEMP%\WhenPwdExp.vbs"                              @echo. PwdX = "NEVER NEVER">>"%TEMP%\WhenPwdExp.vbs"                              @echo End If>>"%TEMP%\WhenPwdExp.vbs"                              @echo WScript.Echo PwdX>>"%TEMP%\WhenPwdExp.vbs"                              @echo Set oUser = Nothing>>"%TEMP%\WhenPwdExp.vbs"                              @echo Set maxPwdAge = Nothing>>"%TEMP%\WhenPwdExp.vbs"                              @echo Set oDomain = Nothing>>"%TEMP%\WhenPwdExp.vbs"                              :doit                              for /f "Tokens=1*" %%a in ('cscript //nologo "%TEMP%\WhenPwdExp.vbs" %USERDNSDOMAIN% %1') do (                               set %2=%%a                               set %3=%%b                              )