Best time to reach Christmas Island (+61)
Christmas Island runs on Christmas Island Time — UTC+7 year-round. Government and mining contacts at The Settlement are reachable 8 AM–4 PM CXT.
CXT (UTC+7), at a glance.
Christmas Island observes Christmas Island Time at UTC+7 all year with no daylight saving. Flying Fish Cove (The Settlement) is the only significant population centre.
Christmas Island against the world's hubs.
Christmas Island is 7 h ahead of London, in sync with Bangkok, and 3 h behind Sydney (AEST). Perth callers are in the same time zone (AWST = UTC+8, so Christmas Island is 1 h behind Perth).
Understanding the time difference between the United States and Christmas Island
Time zone differences across other major countries
Why timing matters for calls to Christmas Island.
Christmas Island's phosphate mining operation and Australian government administration keep short hours. The 8–11 AM CXT window is the reliable slot before midday heat reduces outdoor and field staff availability.
The best windows to reach Christmas Island.
8 AM–11 AM CXT for mining and government contacts. From Perth, that's 9 AM–12 PM AWST — a clean business-hours overlap.
Christmas Island runs at +07:00
The zone is Indian/Christmas. 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 Christmas Island.
No daylight saving
Christmas Island stays on +07:00 all year. The windows below only move when the caller's own country changes its clocks, not when Christmas Island does.
Shared hours with 3 of 5 markets
Callers in London, Mumbai, Sydney share part of the working day with Christmas Island. The table above gives the exact intersection for each.
Where the gap is too wide
There is no 9-to-5 overlap with New York, Los Angeles. Calling Christmas Island from those cities means someone is working outside normal hours — worth saying so when you book the call.
How to call Christmas Island using the +61 code.
Dial +61, then 89164, then the four-digit subscriber number. Ringflow routes via Australian carrier infrastructure for consistent quality to The Settlement.
Number anatomy
Dial exit code
Press + on mobile or 00 from most landlines. This opens an international line.
Enter +61
Christmas Island's international code. Every call to Christmas Island must start with +61.
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 Christmas Island contacts in their window, on the right network.
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When your working day overlaps Christmas Island
Callers in London, Mumbai and Sydney share part of the working day with Christmas Island. There is no shared working window with New York and Los Angeles.
| Calling from | Christmas Island is | Call at (your time) | Which is (their time) |
|---|---|---|---|
| New York | 12h ahead | No shared working hours — you would need to call outside 9am-5pm | |
| Los Angeles | 15h ahead | No shared working hours — you would need to call outside 9am-5pm | |
| London | 7h ahead | 9:00 AM – 10:00 AM | 4:00 PM – 5:00 PM |
| Mumbai | 1h 30m ahead | 9:00 AM – 3:30 PM | 10:30 AM – 5:00 PM |
| Sydney | 4h behind | 1:00 PM – 5:00 PM | 9:00 AM – 1:00 PM |
Windows are the intersection of a 9am-5pm working day in each place, using Christmas Island'sstandard-time offset of +07:00. Christmas Island 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 Christmas Island, answered.
Time zone, daylight saving and dialling questions for Christmas Island (+61).