The reference's Date::from_string: RFC 3339 with a zone (Z or an
offset; fractions kept to the millisecond), or a bare YYYY-MM-DD read
as UTC midnight, calendar-checked. Anything else (a time without a
zone, prose, an impossible date, an epoch number) is InvalidDate.
The reference's
Date::from_string: RFC 3339 with a zone (Zor an offset; fractions kept to the millisecond), or a bareYYYY-MM-DDread as UTC midnight, calendar-checked. Anything else (a time without a zone, prose, an impossible date, an epoch number) isInvalidDate.