A way to know date when someone check a task

The idea arose when I was asked to get all the tasks of everyone in the organization. They want to know when the task was created for the person, when he/she finished it and if he/she missed the deadline to finish the task, to know how much time passed since he/she finished and checked the task.

I can't find this in the API, I hope you can help me with this feature or with the script either in python or php to get this information. Thanks