Airtel Happy Hours: How to get 50% data back

Airtel Happy Hours data will be credited back to users after 6.00 am every day.
Airtel has announced the launch of Happy Hours for its prepaid users. Happy Hours allows users to get 50 per cent data back for all in-app content downloads scheduled between 3.00 am and 5.00 am. The data will be credited back to users after 6.00 am every day. For example, if users schedule a video download of 100MB, then 50 MB will be credited back to their account.
App developers can integrate with Airtel Happy Ho