Look into Vortex date & time

[gatesn]

We should have: • LocalTime ([time unit] after midnight) - Arrow time32 or time64 • LocalDate (julian day) - Arrow date32 • LocalDateTime (julian day and [time unit] after midnight) - Not supported by Arrow • Instant ([time unit] since EPOCH) - Arrow date64, date32, or timestamp with absent tz. • ZonedDateTime (struct{Instance, TZ}) - Arrow timestamp with present tz.

Should each of these arrays be their own encoding? They could just be implemented using "TypedArray".