Internet Time is a world time introduced by the Swiss watch maker Swatch on October 23, 1998.
Internet Time is measured in .beats (24 hours are equivalent to 1000 .beats, so that 1 .beat corresponds to 86.4 s) and Internet Time reference is Biel Mean Time (BMT), that is Central Europe Time (CET).
A day in Internet Time begins at midnight BMT (@000 Swatch .beats).