0000 UTC = 0800 (8 a.m.) WST
1200 UTC = 2000 (8 p.m.) WST
1800 UTC = 0200 (2 a.m.) WST next day
Don't forget that daylight saving adds an
extra hour. So, during daylight saving, the difference for New South
Wales, Victoria and Tasmania is 11 hours instead of 10, and the difference
for South Australia is 10.5 hours instead of 9.5. Courtesty Australian
BOM