When Tails starts, the system time zone is set to GMT (Greenwich Mean Time). This time zone might be a few hours in the future if you are west of the United Kingdom, or in the past if you are east of the UK. The minutes should be accurate.

<p>Fixing the clock when Tails fails to connect to Tor is currently the only
way of changing the time zone of the time displayed in the top navigation
bar.</p>