On Mon 2018-02-05T10:38:56-0800 Paul Eggert hath writ:
I guess I'm not seeing the harm to go with nanoseconds in the data format; if a downstream user wants less precision they can easily round. And following Steve Allen's lead, we can mention in the documentation that there's no practical use of sub-millisecond precision in these old timestamps.
There are serious questions that need context to inform the choices of IANA tz when looking at sub-second precision. I ask that everyone take a look at this writeup and the questions that it poses for what tz database really wants to encode. https://www.ucolick.org/~sla/temporary/tzfracsec/ -- Steve Allen <sla@ucolick.org> WGS-84 (GPS) UCO/Lick Observatory--ISB 260 Natural Sciences II, Room 165 Lat +36.99855 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m