plugin is based on http://eonasdan.github.io/bootstrap-datetimepicker/

Oracle apex plugins for datetimepicker

install instruction :

1. compile package AX_PLG_DATETIME_PKG (pks and pkb) in you apex parsing schema

2. run install sql scripts for apex item_type_plugin_date_time_picker.sql

examples and docs => https://apex.oracle.com/pls/apex/f?p=101959:8