Active Directory lastLogonTimestamp をExcelで日時に変換

https://social.technet.microsoft.com/wiki/contents/articles/12814.lastlogontimestamp-conversion.aspx

http://www.excelforum.com/excel-programming-vba-macros/649446-converting-ad-field-lastlogon-to-date-and-time.html

UTCなので、+9:00 (0.375) してJSTにする

=IF(A1>0,C2/(8.64*10^11) - 109205+0.375,"")