Time ZonesAbout this time zone
McMurdo is one of the 10 time zone areas of Antarctica. Computers and phones know it by the zone name Antarctica/McMurdo. Its time is UTC+13 in January and UTC+12 in July, because the clocks are changed during the year. The short names used for this time are NZDT and NZST. Compared with India (IST), it is 7 hours 30 minutes ahead of India in January and 6 hours 30 minutes ahead of India in July.
Clock changes in 2026 and 2027
McMurdo changes its clocks during the year. These are the changes for 2026 and 2027, worked out from the rules in the IANA time zone database.
| Clock change (local time) | New offset |
|---|---|
| Sunday 5 April 2026: at 3:00 am clocks go back 1 hour to 2:00 am | UTC+12 (NZST) |
| Sunday 27 September 2026: at 2:00 am clocks go forward 1 hour to 3:00 am | UTC+13 (NZDT) |
| Sunday 4 April 2027: at 3:00 am clocks go back 1 hour to 2:00 am | UTC+12 (NZST) |
| Sunday 26 September 2027: at 2:00 am clocks go forward 1 hour to 3:00 am | UTC+13 (NZDT) |
Governments sometimes change these rules at short notice. Check an official source before fixing travel or meetings far ahead.
Counting from those dates, the clocks in McMurdo stay forward for 189 days, from 27 September 2026 to 4 April 2027. That is about 27 weeks, or 52% of a year, on UTC+13 and the rest on UTC+12. The forward period runs across the new year, because summer in the southern half of the world falls in December and January.
Time difference with major cities
| When it is 12:00 noon in McMurdo, it is | In January 2026 | In July 2026 |
|---|---|---|
| India | 4:30 am7 hours 30 minutes behind | 5:30 am6 hours 30 minutes behind |
| United Kingdom | 11:00 pm previous day13 hours behind | 1:00 am11 hours behind |
| France | 12:00 am12 hours behind | 2:00 am10 hours behind |
| New York, United States | 6:00 pm previous day18 hours behind | 8:00 pm previous day16 hours behind |
| Chicago, United States | 5:00 pm previous day19 hours behind | 7:00 pm previous day17 hours behind |
| Los Angeles, United States | 3:00 pm previous day21 hours behind | 5:00 pm previous day19 hours behind |
| United Arab Emirates | 3:00 am9 hours behind | 4:00 am8 hours behind |
| Singapore | 7:00 am5 hours behind | 8:00 am4 hours behind |
| Japan | 8:00 am4 hours behind | 9:00 am3 hours behind |
| Sydney, Australia | 10:00 am2 hours behind | 10:00 am2 hours behind |
The table uses the offsets in force in mid January and mid July 2026. Use the converter for any other date.
Office hours shared with other places
If both sides work from 9 am to 6 pm, these are the hours when a call falls inside the working day at both ends. Times are for McMurdo.
- With India, in January: 4:30 pm to 6:00 pm here, which is 9:00 am to 10:30 am in India (1 hour 30 minutes shared). In July: 3:30 pm to 6:00 pm here, which is 9:00 am to 11:30 am in India (2 hours 30 minutes shared).
- With London, in January: no shared office hour: 9:00 am here is 8:00 pm in London, and 6:00 pm here is 5:00 am there, so one side has to start early or stay late. In July: no shared office hour: 9:00 am here is 10:00 pm in London, and 6:00 pm here is 7:00 am there, so one side has to start early or stay late.
- With New York, in January: 9:00 am to 12:00 pm here, which is 3:00 pm to 6:00 pm in New York (3 hours shared). In July: 9:00 am to 10:00 am here, which is 5:00 pm to 6:00 pm in New York (1 hour shared).
Places with exactly the same time
These zones show the same time as McMurdo through the whole year: Auckland, New Zealand.
The clock above uses your device's clock and the time zone rules built into your browser. Rules on this page: IANA time zone database 2026f. See About and data sources.