UI Components / Double Calendar
In your Backendless App, go to the Marketplace -> User Interface tab and install the Double Calendar componentInstall the component to the UI Container of your choice

Double Calendar

Double Calendar is a component for Backendless UI Builder
designed to select a start date and an end date.
You can also choose "specific date range" mode to select a specific date.

Customizations include specific Date Range, Selection Range, and
visibility of headers, days amount, month and year dropdown.

UI Components / Double Calendar