Ionic 3 Custom Calendar

Hey guys,
I need to customize ionic 3 calendar to limit the time duration to 12 hrs from 24 hrs.
Where in the plugin provides the time duration of 12 AM to 11 PM. I want it to restrict to 8 AM to 7 PM.

I want duration something like this shown in below picture.

Guys can any help me to resolve this. Thank you in advance