AEST vs PDT — cities and working rhythm
Australia's east-coast winter offset (April to October), UTC+10. Brisbane stays on AEST year-round since Queensland has no DST. Big gap with Europe (8-10 h ahead) and North America (14-17 h ahead) — often faster to just email.
US West Coast summer offset (mid-March to early November), UTC-7. During PDT, the 7-h gap with UTC / London simplifies daylight-hour overlap — 9 AM PT = 5 PM London (BST).
Time gap: PDT is 17.0 hours behind AEST (standard-time offsets — daylight-saving flips shift this by an hour twice a year in most northern-hemisphere zones).