AEDT vs CST — cities and working rhythm
Australia's east coast — Sydney (financial), Melbourne (corporate HQ / media), Brisbane (mining / education). Business hours 9 AM – 5 PM AET. Summer: AEDT (UTC+11); winter: AEST (UTC+10). Brisbane stays on AEST year-round — so Sydney and Brisbane are 1 h apart in summer, same in winter. Almost entirely opposite of European hours.
US Central — Chicago-anchored, most of the middle third of the US, plus much of Canada's prairies and central Mexico. Business hours 9 AM – 5 PM CT. Note: CST is also used for China Standard Time (UTC+8) — completely different zone. This converter treats CST as US Central unless the target zone makes China context obvious.
Time gap: CST is 17.0 hours behind AEDT (standard-time offsets — daylight-saving flips shift this by an hour twice a year in most northern-hemisphere zones).