Yes, it's a bit odd ... glad you worked it out!
For some reason if you just type in 'Sydney' the lat comes out as -24deg and long as +135.
This is the result for Sydney's approx location of -34deg and +151deg:
Requested: Latitude -34o 00' 00", Longitude 151o 00' 00", Elevation 0 km, Date 2007/01/1
Calculated: Latitude -34.0000o, Longitude +151.0000o, Elevation 0.00 km, Epoch 2007.0000
Magnetic Field Components
D = 12.538 deg
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