iOS Calendar: What is the meaning of Time Zone Override?
Floating events

These kind of events happen always at the same time of day. An event called "Wake up" set for 6 AM and with the time zone set to Floating will always occur at 6 AM.

If you are in LA, it will occur at 6 AM, if you are in Hong Kong, it will also occur at 6 AM.

The time zone in Settings &gt; General &gt; Date &amp; Time is relevant for floating events.



Regular events (Time Zone set to GMT+1 with DST)

You are in London and create an event "Process emails" for 4 PM (time zone set to London, GMT+1).

Turn on time zone override and set it to New York. Your event will now show up at 8 AM (GMT-4).



To answer your specific scenarios


Time Zone Override: Off, Event time zone set to home


  An event at 6 AM will be displayed at 6 AM

Time Zone Override: On, Event time zone set to home


  An event at 6 AM will be displayed at 1 AM (London to NY)

Time Zone Override: Off, Event time zone set to floating


  An event at 6 AM will always be displayed at 6 AM, no matter where you are.

Time Zone Override: On, Event time zone set to floating


  An event at 6 AM will always be displayed at 6 AM, no matter where you are.