Looks like Adelaide has it further north by about a hundred kilometers. Now, between Adelaide and Sidney,...that would be a close call...(smile.

Adelaide is the capital and most populous city of the Australian state of South Australia, and is the fifth-largest city in Australia, with a population of more than 1.1 million. Adelaide is located north of the Fleurieu Peninsula, on the Adelaide Plains between the Gulf St Vincent and the low-lying Mount Lofty Ranges. The city stretches 20 km (12 mi) from the coast to the foothills, and 90 km (56 mi) from Gawler at its northern extent to Sellicks Beach in the south. According to the Australian Bureau of Statistics, the Adelaide Metropolitan Region has a total land area of 870 km2 (340 sq mi), and is at an average elevation of 50 metres (160 ft) above sea level. Mount Lofty is located east of the Adelaide metropolitan region in the Adelaide Hills at an elevation of 727 metres (2,390 ft). It is the tallest point of the city and in the state south of Burra. Adelaide is at coordinates: 34° 55′ 44.4″ S, 138° 36′ 3.6″ E http://en.wikipedia.org/wiki/Adelaide http://stable.toolserver.org/geohack/geohack.php?pagename=Adelaide&params=-34.929_N_138.601_E_type:landmark_region:AU Canberra, the capital city of Australia, is located at the northern end of the Australian Capital Territory, 280 km (170 mi) south-west of Sydney, and 650 km (400 mi) north-east of Melbourne. The co-ordinates of Canberra are: 35° 18′ 27″ S, 149° 7′ 27.9″ E http://en.wikipedia.org/wiki/Canberra http://stable.toolserver.org/geohack/geohack.php?pagename=Canberra&params=35_18_27_S_149_07_27.9_E_type:city_region:AU-ACT As (34° 55′ 44.4″ S) is definitely North of (35° 18′ 27″ S), therefore, Adelaide is about 23′ North of Canberra.