Time ZonesWhat UTC+10 means
A clock set to UTC+10 shows UTC plus 10 hours. When it is 12:00 noon UTC, it is 10:00 pm here. Compared with India (UTC+5:30) it is 4 hours 30 minutes ahead.
Converting to and from UTC+10
To turn UTC into this time, add 10 hours. To go back to UTC, subtract the same amount. Three examples: 6:00 am UTC is 4:00 pm here; 3:00 pm UTC is 1:00 am here on the next day; 9:00 am here is 11:00 pm UTC on the previous day. The calendar date changes whenever the sum passes midnight.
Where UTC+10 sits on the map
The Earth turns 15 degrees of longitude every hour. The line where the sun-time matches UTC+10 exactly is 150° east. The places that use it are spread much wider than that one line. Of the main cities listed below, Khabarovsk (135.1° east) is the farthest west and Brisbane (153° east) the farthest east. By the sun they are about 1 hour 12 minutes apart, yet their clocks agree.
Who is on UTC+10, and when
5 zone areas in 5 countries and territories keep UTC+10 through the whole year. The towns of 15,000 or more there hold about 8.5 million people (GeoNames figures). 3 more zone areas are on it for only part of the year: for 3 of them it is the standard (winter) time. That is why the number of people on UTC+10 rises and falls with the seasons.
Noon at UTC+10 elsewhere
When a clock on UTC+10 shows 12:00 noon, it is 7:30 am in India; 2:00 am in London in January and 3:00 am in July; 9:00 pm the previous day in New York in January and 10:00 pm the previous day in July; 11:00 am in Tokyo. For any other place or date, use the converter.
Largest cities on this time
Sydney, Melbourne, Brisbane, Gold Coast, Khabarovsk, Vladivostok, Newcastle, Sunshine Coast.
All year
These places keep UTC+10 through the whole year.
Part of the year
These places are on UTC+10 for part of the year and move their clocks for the rest. Open one for its dates.
Neighbouring offsets: UTC+9, UTC+9:30, UTC+10:30, UTC+11. All UTC offsets.