On Wed, 26 Jul 2017 10:17:48 +0200, Ralf Mardorf wrote: >To avoid issues the time should be corrected gradually, if the clock is >set back, an old file quasi could be newer than a new file, which could >cause issues. IOW using local time always could cause trouble, at >least when switching from/to daylight saving time. I'm not sure if it's avoided by using UTC, actually the time displayed by e.g. the ls-command would be the local time, even if the hardware clock is set to UTC, but perhaps the timestamp of the file differs? Anyway, the Wiki explains other issues