ModifiedDateGMT is a TIdDateTime property that represents the date and time expressed in the GMT timezone that an entry was last modified on the remote file system. 

Use ModifiedDate to access the date and time value expressed in the local timezone for the client. 

Values in ModifiedDate and ModifiedDateGMT are assigned when the directory listing parser encounters the "modify" fact in a listing response. If the "modify" fact is not present in the Facts for the collection item, the property contains an empty date value (0.0) and the ModifiedAvail property is set to False. 

Use LastAccess and LastAccessGMT to determine the date and time a file was last accesses on the remote file system. 

Use CreationDate and CreationDateGMT to access the date and time an entry was created on the remote file system.

LastAccessGMT 

LastAccess 

ModifiedDate 

ModifiedAvail 

CreationDate 

CreationDateGMT 

Facts 

TIdFTPLPMList