Open your Domain Controller.
Start > Run > Adsiedit.msc
go to Domain Partition > find that particular user then Right Click
and check the attribute lastlogon, here you will see a Value like this "128271382742968750"
now open command prompt and run below command to change this to date format
w32tm.exe /ntte 128271382742968750
the Result will be like below :-
148462 05:57:54.2968750 - 6/24/2007 11:27:54 AM (local time)
Note : if you have multiple ADC then you need to check this on all ADC for latest Logon time.
