Why is my device time zone different from my location?
Your device has a time-zone setting. Your physical point belongs to a mapped time zone. A manual setting, travel or an approximate network point can make those answers differ.
Compare the identifier and the clock
An IANA identifier names a set of clock rules. Two different identifiers can share the same current offset and still have different histories or future changes. Compare the displayed local time and UTC offset, not just the name.
Daylight saving is a local rule
Some places change clocks and others do not. Arizona is an important US exception: most of the state does not observe daylight saving, while the Navajo Nation does. A whole-state answer can therefore need several zones and a point or city lookup. Browser clock data can lag a recent government decision; keep the browser and operating system current.
A clock change can skip or repeat a local time
When an offset increases, some local times do not occur. When it decreases, a local time can occur twice. The converter detects both cases. For a meeting, use the date as well as the zone and confirm which repeated occurrence is intended.