When to call Saint Martin (+590)
Saint Martin runs on Atlantic Standard Time — UTC−4 year-round. Tourism and duty-free contacts in Marigot are reachable 9 AM–5 PM AST.
AST (UTC−4), at a glance.
Both sides of Saint Martin observe UTC−4 all year with no daylight saving. Marigot (French) and Philipsburg (Dutch Sint Maarten) share the same time zone.
Saint Martin against the world's hubs.
Saint Martin is 4 h behind London, in sync with Halifax, and 1 h ahead of New York. Miami buyers and charter brokers overlap completely with Marigot's business day.
Understanding the time difference between the United States and Saint Martin
Time zone differences across other major countries
Why timing matters for calls to Saint Martin.
Saint Martin's dual-flag tourism economy has hospitality contacts on both sides of the island. The 9–11 AM AST window catches marina concierge and duty-free buyers before the cruise ship rush.
The best windows to reach Saint Martin.
9 AM–12 PM AST for marina, resort and duty-free contacts. Port days (large cruise ships) can swamp Marigot contacts 10 AM–2 PM — call before 10 AM on port days.
Saint Martin runs at -04:00
The zone is America/Marigot. 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 Saint Martin.
No daylight saving
Saint Martin stays on -04:00 all year. The windows below only move when the caller's own country changes its clocks, not when Saint Martin does.
Shared hours with 3 of 5 markets
Callers in New York, Los Angeles, London share part of the working day with Saint Martin. The table above gives the exact intersection for each.
Where the gap is too wide
There is no 9-to-5 overlap with Mumbai, Sydney. Calling Saint Martin from those cities means someone is working outside normal hours — worth saying so when you book the call.
How to call Saint Martin using the +590 code.
Dial +590, then 590 (landlines) or 690/691 (mobiles), then the six-digit subscriber number. Ringflow routes via French Caribbean infrastructure to Marigot.
Number anatomy
Dial exit code
Press + on mobile or 00 from most landlines. This opens an international line.
Enter +590
Saint Martin's international code. Every call to Saint Martin must start with +590.
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.
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When your working day overlaps Saint Martin
Callers in New York, Los Angeles and London share part of the working day with Saint Martin. There is no shared working window with Mumbai and Sydney.
| Calling from | Saint Martin is | Call at (your time) | Which is (their time) |
|---|---|---|---|
| New York | 1h ahead | 9:00 AM – 4:00 PM | 10:00 AM – 5:00 PM |
| Los Angeles | 4h ahead | 9:00 AM – 1:00 PM | 1:00 PM – 5:00 PM |
| London | 4h behind | 1:00 PM – 5:00 PM | 9:00 AM – 1:00 PM |
| Mumbai | 9h 30m behind | No shared working hours — you would need to call outside 9am-5pm | |
| Sydney | 15h 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 Saint Martin'sstandard-time offset of -04:00. Saint Martin does not observe daylight saving, so these windows hold all year — though they shift when the caller's own country changes its clocks.
FAQ
Calling Saint Martin, answered.
Time zone, daylight saving and dialling questions for Saint Martin (+590).