Circles of latitude between the 25th parallel south and the 30th parallel south

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Circles of latitude from the 25th to the 30th south are imaginary rings around the Earth at 26°, 27°, 28°, 29° and 30° south of the equator. Each line crosses oceans and continents, and some lines also define borders in parts of Australia. Here are key facts for each:

26° south
- Crosses the Atlantic Ocean, Africa, the Indian Ocean, Australia, the Pacific Ocean and South America.
- In Australia, it helps define the northern border of South Australia and the southern border of the Northern Territory.
- A small 127-meter stretch of the Western Australia/Northern Territory border at Surveyor Generals Corner is defined by this line due to old mapping limitations.
- It also helps define part of the Queensland–South Australia border between 138°E and 141°E.

27° south
- Crosses the Atlantic Ocean, Africa, the Indian Ocean, Australasia, the Pacific Ocean and South America.
- Daylight at this latitude: about 13 hours 52 minutes in December and about 10 hours 24 minutes in June.

28° south
- Crosses the Atlantic Ocean, Africa, the Indian Ocean, Australasia, the Pacific Ocean and South America.
- Daylight at this latitude: about 13 hours 57 minutes in December and about 10 hours 19 minutes in June.

29° south
- Crosses the Atlantic Ocean, Africa, the Indian Ocean, Australasia, the Pacific Ocean and South America.
- In Australia, much of the border between Queensland and New South Wales is defined by this parallel.

30° south
- Crosses Africa, the Indian Ocean, Australia, the Pacific Ocean, South America and the Atlantic Ocean.
- If Earth were a perfect sphere, this would be the line that divides the Southern Hemisphere’s area in half, but because the Earth is not a perfect sphere, the true dividing latitude lies a little north of 30°.
- Daylight at this latitude: about 14 hours 5 minutes in December and about 10 hours 13 minutes in June.
- At solar noon on December 21, the sun is about 83.83° high; on June 21, it is about 36.17°.