alt Hacker NewsThat's easy though. An event of such type is about an absolute point in time, so your calendar stores it like that and then displays it in your current timezone (or whatever one you specify).
When you change locations and you have your calendar configured to show events in "the" timezone of your location, it does so. And should there be no clear timezone, it should ask you.
Very simple problem and simple solutions. There are much harder problems imho.
As you can see, the summertime change does it even matter here.
But I don't want my San Francisco meeting to display in my calendar as 1am the day before when I'm in Sydney, then switch to 4pm on Tuesday once I'm in California. And I sure as hell don't want the displayed time in Sydney to switch from 1am to 11pm or 3am just because daylight savings kicked in.
It's a 4pm Tuesday meeting. I want it to show as 4pm while I'm in Sydney, 4pm while I'm on a stopover in Hawaii, and correctly alert me for my 4pm meeting when I'm in San Francisco. And it probably should alert me at 4pm San Francisco time even if I'm not there, in case I missed my connecting flight in Hawaii and I want to call in at the correct time. And that last requirement conflicts wit the "I want it to show as 4pm while I'm on a stopover in Hawaii" requirement, because I'm human and messy and I want the impossible without expending any effort to make it happen.
I'm pretty sure there is no "simple solution" for getting the UX right so I can add a meeting in San Francisco on my phone while I'm in Sydney, and have it "just work" without it always bugging me by asking for timezones.