important caveat with Rsync on NT and dayligt savings time

wolfe-mcse at wolfe-mcse at
Tue Oct 29 19:27:00 EST 2002


Fortunately you posted the KB article number, and having read the article, I
see you have a bit of a misunderstanding of what is going on.

First off, NT/2000 uses a offset from GMT, which does not observe Daylight
Savings Time (DST), for storing the time in the Event Log, and NTFS volumes.
This also affects Windows 95, Windows 98, Windows ME, and Windows XP
platforms viewing the same data remotely.

On the other side of file systems, the FAT16, and FAT32 filesystems use the
number of seconds that have elapsed since January 1, 1980 to store the time,
rather than a time offset from GMT.

In case you want to avoid this happening in the future, at least until a
solution can be developed, implemented, and tested, you can turn off DST.
This will mean that for one-half of the year, your clock will be out-of-sync
by 1 hour, but it may be better to be off by 1 hour to avoid this problem in
the future.

I appreciate you warning others about this, as it has identified a cosmetic
bug that I was completely unaware of.  Necessity is the mother of invention,
and this nuance will be addressed in my implementation of rsync as a service
for Win32.


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