forms/datetime converts typed wall-clock times (2026-10-31T14:30) to UTC in
the TZ zone with Intl offsets: a time in a spring-forward gap moves forward,
a repeated fall-back time means its first occurrence, and an unchanged
wall-clock time keeps the original instant with its precision. Instants are
shown as 2026-10-31 14:30:00 CDT; display values the server formats in a
declared zone are kept; --utc shows raw instants.
The form session converts DATE_TIME on set (table create, update, copy and
process values), DATE_TIME validation now requires a date and time, --where
and --group criteria on DATE_TIME fields are converted (a date alone is local
midnight), and table get/query and process screens format in the zone.
Tests cover Chicago, London, Sydney and Kolkata DST edges; verified live on
fieldLab (create, get, --utc, TZ=Asia/Tokyo, filters, update across the gap,
fieldLab.bulkEdit values).
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
james.maesandClaude Fable 5.1
e058942257