
Like most other countries in the world, Luxembourg will stop using GMT and refer to UTC (Coordinated Universal Time) instead. This changes nothing in practice: the local time in Luxembourg is referred to as UTC+1 in winter, UTC+2 in summer.
Even though there is no impact on how time is measured, the change of reference requires a change in law, and a bill must be voted.
The exact time in Luxembourg is determined by the atomic clock of the Ilnas metrology office in Esch-Belval. This atomic clock is part of a network of 50 such clocks worldwide, with UTC being calculated as their average.
During the discussions of the Economy Commission of the Chamber of Deputies, MPs pointed out that work is still ongoing at EU level to scrap the change between summer and winter time. Talks about this in the European Parliament are said to be in deadlock, however. Either way, Luxembourg can hardly have a different opinion on the matter than its neighbours.