Readonlydelivery_The window of time within which the package is expected to be delivered
Readonlyexpected_When the package is expected to be delivered
Readonlyon_Whether the package is on schedule to be delivered on time (true),
behind schdule for being delivered on time (false),
or has an unknown on-time status (null).
expected_delivery in different representations
Information about the expected delivery times for the shipment