One of the 10 best history apps for Android as reported by Android Authority.
Historical Calendar is a "Today in History" app that will show you various history fun facts about every day. That includes various info events births deaths and more. (*)

FEATURES
• A lot of data. The app uses only the most up-to-date history facts from Wikipedia available under CC BY-SA 3.0 license.
• Content in multiple languages. Choose from more than 50 languages the events will reflect the selected culture.
• Offline mode. Enjoy the app without internet access enable the offline mode in the Settings.
• Search. Search entire history works great with offline mode enabled.
• Widget. Have a quick view on the historical facts of the day by using the widget.
• Agenda for favorite events. Create your special collection of historical dates or events by saving them.
• Tablet support
• Lightweight and fast

(*) http://www.androidauthority.com/best-history-apps-for-android-801017/