Or how about just when the screen was turned on? Have you tried the free version but would like more features or just want to support the developer? Then THIS is the app for you! This is a plus or premium version of my app Unlock Log. This app can log display on, unlock, and lock/screen off events. Features auto-clearing, color coding, and event logging options.
This download is totally secure. G00Dapps is the developer of the app that can be found in the Tools category. Google Play shows that Unlock Log + is rated 3.8 by its users.
The most recent release was on Aug 17, 2016 and this application was downloaded and set up by over 10 users. You are able to get the installation package of Unlock Log + 1.1 free of charge and take a look at users' reviews on Droid Informer. The app runs on Android 4.0 and higher.