@jimfenton @MeanwhileinCanada It gets worse. In 1990s, in Silicon Valley, I used to arrange lectures&sales calls in Australia & New Zealand.
https://www.timeanddate.com/time/australia/time-zones-background.htmlhttps://www.timeanddate.com/time/australia/time-zones-background.htmlSome states use DST, others do not, and some use half-hour or 15-minute offsets.
Since it's in Southern Hemisphere, states that use DST move clocks forward 1st Sunday of October, back 1st Sunday in April, which of course are not the same dates as in USA. Coordination=ugh.
World should just use UTC!