System timezone The time for system events like messages and support questions is always stored as UTC . Setting a System timezone under Tools & Data can affect how times are shown in the system.   The selected timezone will be shown as a clock on the Dashboard and in the top menu, along with the timezone label. Simply put: this clarifies to all users ”what we mean when we say 12 o’clock” The time for events like messages and support questions will be converted from UTC into this time and shown with the timezone label. E.g. 2020-02-20 10:10:10 CET   The selected time for job deadlines will shown as stored but together with the timezone label as a clarification. This includes the job info page (see pic), jobs shown on the Dashboard and in the joblist.  Job info page. Deadline is shown with system timezone set to CET.