sync a local folder with a ftp folder

[runrev260805 at m-r-d.de]

Hi,

i have to sync a local folder with about 5000 files with a ftp folder.
If a new file is in the local folder or if a file has changed it has to be uploaded to the ftp folder.

Okay, if i only had to upload new files, i could compare the files of the local and the remote folder. But i also have to upload changed files.
Problem here is, that files stored on the ftp shows their modification date/time with 1 hour difference. 

Has anyone done such sync things already?

Matthias