Facebook app. allows you to see or view past birthday or upcoming once of your friends.
For you to be able to view this, simply follow the steps below.
1. Open your Facebook app
2. Click on the “search icon” at the top right corner.
3. You will need to input or Type in “Upcoming birthdays” and select the search button.
4. The search will bring a list of birthdays available and you can select to view the once that you wish to view