When to call Luxembourg (+352)
Luxembourg runs on CET — one hour ahead of London. Knowing the best time to call Luxembourg on +352 keeps you inside Luxembourg City's EU-institution and fund-management office hours.
CET, at a glance.
See the live gap between a global reference city and Luxembourg's single CET zone — no calculator needed.
Luxembourg against the world's hubs.
Compare live Luxembourgish time against New York, London and Hong Kong so your call lands inside Luxembourg City office hours.
Understanding the time difference between the United States and Luxembourg
Time zone differences across other major countries
Why timing matters for calls to Luxembourg.
Luxembourg's financial sector runs on tight settlement windows — a morning call before 11 AM reaches funds and compliance desks at full attention.
The best windows to reach Luxembourg.
Four factors that decide when a Luxembourgish prospect picks up — anchored to the CET financial working day.
Luxembourg runs at +01:00
The zone is Europe/Luxembourg. Every window on this page is worked out from that offset rather than a rule of thumb, so the times shown are the ones that actually apply to Luxembourg.
Clocks change here
Luxembourg observes daylight saving, shifting to +02:00 in its summer. A window that works in January moves by an hour later in the year, so re-check before scheduling a recurring call.
Shared hours with 3 of 5 markets
Callers in New York, London, Mumbai share part of the working day with Luxembourg. The table above gives the exact intersection for each.
Where the gap is too wide
There is no 9-to-5 overlap with Los Angeles, Sydney. Calling Luxembourg from those cities means someone is working outside normal hours — worth saying so when you book the call.
How to call Luxembourg using the +352 code.
Four simple steps for every call into Luxembourg — variable-length numbers, no trunk zero.
Number anatomy
Dial exit code
Press + on mobile or 00 from most landlines. This opens an international line.
Enter +352
Luxembourg's international code. Every call to Luxembourg must start with +352.
Area prefix
Add the local area or mobile network code — always drop any leading zero used for domestic calls.
Full number
Dial the remaining subscriber digits. Your number is now correctly formatted for international routing.
Best time to call — every country.
Jump to any country's best-time-to-call guide. Search by name, ISO or dial prefix.
Reach Luxembourgish customers in their window, on carrier-grade routes.
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When your working day overlaps Luxembourg
Callers in New York, London and Mumbai share part of the working day with Luxembourg. There is no shared working window with Los Angeles and Sydney.
| Calling from | Luxembourg is | Call at (your time) | Which is (their time) |
|---|---|---|---|
| New York | 6h ahead | 9:00 AM – 11:00 AM | 3:00 PM – 5:00 PM |
| Los Angeles | 9h ahead | No shared working hours — you would need to call outside 9am-5pm | |
| London | 1h ahead | 9:00 AM – 4:00 PM | 10:00 AM – 5:00 PM |
| Mumbai | 4h 30m behind | 1:30 PM – 5:00 PM | 9:00 AM – 12:30 PM |
| Sydney | 10h behind | No shared working hours — you would need to call outside 9am-5pm | |
Windows are the intersection of a 9am-5pm working day in each place, using Luxembourg'sstandard-time offset of +01:00. Luxembourg observes daylight saving, so during its summer the offset moves to +02:00 and each window shifts by an hour.
FAQ
Calling Luxembourg, answered.
Time zone, daylight saving and dialling questions for Luxembourg (+352).