Bài này về merge date-time nếu có range trùng nhau. { "small": { "ranges": [ { "start_time": "2021-06-09 08:00:00", "end_time": "2021-06-09 10:00:00" }, { "start_time": "2021-06-09 09:00:00", "end_time": "2021-06-09 13:00:00" }, { "start_time": "2021-06-09 17:00:00", "end_time": "2021-06-09 20:00:00" } ],… Read more