Микроконтроллеры

вот чего писали в systemd changelog по этому поводу 

* systemd will no longer inform the kernel about the current

timezone, as this is necessarily incorrect and racy as the

kernel has no understanding of DST and similar

concepts. This hence means FAT timestamps will be always

considered UTC, similar to what Android is already

doing. Also, when the RTC is configured to the local time

(rather than UTC) systemd will never synchronize back to it,

as this might confuse Windows at a later boot.