In article <5.1.0.14.2.20050215100243.02f5de40@127.0.0.1>,
Graham Klyne
Yes, something like that... RFC3339 has a trick of using -00:00 offset for this: [[ 4.3. Unknown Local Offset Convention
If the time in UTC is known, but the offset to local time is unknown,
That's not what I meant at all. A CalendarTime without a time zone is a local time, with no information about time zone or time in UTC. I'll give you an example: if you have an appointment at 8pm today, and a source of local time that says 5pm, you know you have three hours. You don't need to know what time-zone you're in or what time UTC it is. I'm not actually proposing a source of local time other than calculated from UTC and local time zone offset, mind, so it may not be that useful. -- Ashley Yakeley, Seattle WA