Web, domains and email
UTC
Abbreviation for Coordinated Universal Time
In short and in plain language
UTC is the time that the whole world uses as a shared reference.
Time zones are based on it. Technical systems such as mail servers often give times and report periods in it.
German local time differs from it. How much depends on the season.
Definition
UTC is the worldwide reference time on which time zones are based. Technical systems such as mail servers often state times and reporting periods in UTC. German local time differs from it depending on the season.