Thank you: this is very useful.

Linked inside is a discussion from the Javascript people with the editor
of ISO 8601:

https://github.com/tc39/proposal-temporal/issues/819

In turn, he mentions that ISO 8601 incorporates CalConnect 18011 and
18012 standards, which are at least publicly accessible:

https://standards.calconnect.org/cc/cc-18011-2018.html#_1dd0ef40-edb1-70fd-aeb2-475e262b23f5

https://standards.calconnect.org/cc/cc-18012-2018.html

I will mention those with a link so people don't have to fork over money
to the ISO.

__________________

The ISO 8601 editor mentioned that timezones are out of scope for that
standard, which strongly suggests to me to remove `timestamp+` from the
SRFI. This has to deal timezone issues, which people seem to have not
figured out yet.

This leaves the issue of *how* someone would implement something like
timestamp+. I'm thinking of exposing a low-level timezone and
leap-second table API so that the programmer can implement it themselves
with all available information.

date+ is simpler, so I think I will keep that.

-- Peter McGoron