List of Times and Dates a Specific App was Accessed on my Mac
Go to Console in the Utilities folder and start it. When the window appears, on the left there is a list of reports. Click on Mac Analytics Data. After clicking this the info will appear in the console window.  Go to the search bar on the top of the console window and enter the name of the program of interest.  See the image below. It shows the window when I performed a session with the app Atom.