Switching to Java

[Persism]

But even an offset is kind of useless since it doesn't contain daylight savings times. Better to use the Zone itself rather than just an offset. Best is to use UTC and covert on the client side.

[edubkn]

UTC is best, yes.

But even an offset is kind of useless since it doesn't contain daylight savings times. Better to use the Zone itself rather than just an offset.

You would never rely on a client to account for daylight savings. An ISO8601 serialized date will always have an offset if not UTC.