Last question: timezone information is preserved in timestamp columns, but not in time columns (screenshot 1). And those time columns are always assumed to be in local timezone (screenshot 2). Is this as designed or is there a plan to support timezones in time columns? I can look at the code in this case, but that means changing the Time datatype to include the TZ info, which will be a breaking change.

Yes, it's by design, as we follow the Arrow spec for our datatypes: https://arrow.apache.org/docs/format/Columnar.html#data-types,

Makes sense, thanks a lot! Now I wonder why arrow does not include it. Well, as long as I know it, it's perfect 🙂