Java DateTimeFormatter to Rust chrono.

21 of 26 fields map cleanly; 5 have no Rust chrono token.

Rust chrono

yyyy-%m-%d %H:%M

Reference · Mon, Jan 2 2006, 3:04:05 PM MST

yyyy-01-02 15:04

Right now, your zone

…

Not in the Java DateTimeFormatter table: y — passed through untranslated.

Java DateTimeFormatter	Rust chrono	Field	Example
uuuu	%Y	Four-digit year	2006
uu	%y	Two-digit year	06
M	no token	Month number	1
MM	%m	Month number, padded	01
MMM	%b	Month name, abbreviated	Jan
MMMM	%B	Month name, full	January
d	no token	Day of month	2
dd	%d	Day of month, padded	02
D	%j	Day of year	2
EEE	%a	Weekday, abbreviated	Mon
EEEE	%A	Weekday, full	Monday
w	%V	Week of year	1
YYYY	%G	ISO week-based year	2006
H	no token	Hour, 24-hour clock	15
HH	%H	Hour, 24-hour clock, padded	15
h	no token	Hour, 12-hour clock	3
hh	%I	Hour, 12-hour clock, padded	03
a	%p	AM/PM marker	PM
mm	%M	Minute, padded	04
ss	%S	Second, padded	05
SSS	%.3f	Fractional seconds	000
Z	%z	UTC offset, basic	-0700
xxx	%:z	UTC offset, extended	-07:00
z	%Z	Time-zone name, short	MST
G	no token	Era	AD
Q	%q	Quarter	1