The bottom line is that often Winscp in Commands/Synchronize.../
will want to sync files even though the remote files are the same, just with a time stamp that is off by 1 hr. I've even had this problem with offsets of several hours. (Maybe SYSOP has restored files from backup somehow with a time offset?; also zipping and unzipping files can cause this: zip archives handle DST and time zone badly.)
The problem occurs in Commands/Synchronize.../
(at least) with the following settings:
- Modification time
* To be able to specify that a time difference less than hh hours mm minutes ss seconds be ignored.
* To be able to specify that a time difference of integer hours (not more than hh hours) be ignored.