date-object
$date-object
Expands a Date into a plain object with named calendar fields.
'$date-object'or{'$date-object': 'utc'}— UTC fields (default){'$date-object': 'local'}— local-timezone fields
Output shape: {year, month, day, hour, minute, second, ms, zone}
where month is 1–12 (not 0-based), and zone is 'utc' or 'local'.
The output is accepted by $date for round-trip reassembly.