ISO-serialized datetimes are the only serialized datetimes. At least if you want to avoid painfulness. Similarly, UTC is good. If there's one thing I've lear

ISO-serialized datetimes are the only serialized datetimes. At least if you want to avoid painfulness. Similarly, UTC is good. If there's one thing I've learned, it's that, for my own sanity, datetimes should be localized and formatted at the last possible instant, just before a human has to see them, and kept in a consistent, canonical form at all other times.