Time zone · Antarctic
DUMONT
Dumont-d’Urville Time
Dumont-d'Urville Time keeps the research community at Dumont d'Urville Station in sync with the rest of the +10 zone, providing a steady ten-hour jump ahead of UTC throughout the year with no daylight saving changes to worry about.
Sunday, May 31, 2026
Current offset
UTC+10:00
Standard · +10
Daylight saving
Not observed
Year-round standard time
IANA zones
1
None observe daylight saving
DST offset
—
No summer variant
About DUMONT
A fixed, year-round offset.
Dumont-d'Urville Time keeps the research community at Dumont d'Urville Station in sync with the rest of the +10 zone, providing a steady ten-hour jump ahead of UTC throughout the year with no daylight saving changes to worry about.
IANA zones · the technical identifiers
The zone that resolve to DUMONT.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Where DUMONT is used
One country.
Same offset · UTC+10:00
Other zones at UTC+10:00 right now.
These named zones share DUMONT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Frequently asked questions
Common questions about DUMONT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Why is the time zone called Dumont-d'Urville Time?
- It is named after Dumont d'Urville Station, a French research station in Antarctica dedicated to the French explorer Jules Dumont d'Urville.
- Is Dumont-d'Urville Time always UTC+10?
- Yes, Dumont d'Urville Station observes 10 hours ahead of Coordinated Universal Time all year, with no daylight saving adjustments.
- Does Dumont-d'Urville Time observe daylight saving time?
- No, Dumont d'Urville Station stays on UTC+10 permanently.
- What part of Antarctica uses Dumont-d'Urville Time?
- Only the Dumont d'Urville Station and its immediate surroundings carry this time, as many Antarctic bases choose offsets aligned with their home countries or supply depots.
- How does Dumont-d'Urville Time compare with Australian Eastern Standard Time?
- Outside of Australian daylight saving, AEST and Dumont-d'Urville Time share the same +10 offset, making coordination with eastern Australia straightforward.
- Are there other time zones in Antarctica?
- Yes, Antarctica has more than a dozen time zones, with most stations adopting the time of their home country, a partner nation, or a nearby logistics hub.
- Why don’t Antarctic bases move clocks for daylight saving?
- With extreme variations in daylight—from nearly 24-hour sun in summer to prolonged darkness in winter—shifting clocks offers little practical benefit.
- How do researchers staying at Dumont d'Urville maintain schedules?
- They rely on the fixed UTC+10 offset, body clocks, lighting, and strict routines to manage sleep and work despite the unusual polar light cycle.
- Can seasons at Dumont d'Urville change the official time?
- No, the station keeps UTC+10 year-round regardless of the length of daylight or polar night.
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