Serialising Extended Data About Times and Events

Document Proposed charter Serialising Extended Data About Times and Events WG (sedate)
Title Serialising Extended Data About Times and Events
Last updated 2021-04-30
State Start Chartering/Rechartering (Internal Steering Group/IAB Review) Initial chartering
WG State Proposed
IESG Responsible AD Francesca Palombini
Charter Edit AD Francesca Palombini
Telechat date On agenda of 2021-05-20 IESG telechat
Has enough positions to pass.
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RFC3339 defines a format that can reliably express an instant in time,
either in UTC or in a local time along with the offset against UTC, however
datetime data often has additional context, such as the timezone or calendar
system that was in use when that instant was recorded. Particularly when using
times for interval, recurrence, or offset calculations, it's necessary to
know the context in which the timepoint exists.

It is valuable to have a serialisation format which retains this context and
can reliably round-trip the additional context to systems which understand it,
via intermediate systems which only need to know about the instant in time.

The TC39 working group at ECMA have developed a format which is a good basis
for this work.

It is anticipated that this document would be a companion to RFC3339 rather
than a replacement, embedding an un-altered RFC3339 instant along with the
contextual data.

It is also within scope for this group to consider a minor update to RFC3339 to
allow larger than 4 digit signed years, to enable representing times further
into the past and future.

Once this work is done it is anticipated that this working group will be
short-lived, and once the one or two documents are published the working group
will close down.

Proposed milestones

No milestones for charter found.