Holiday Calendar built on top of new version of Event Calendar

In 2015, I have built a framework to display events in a calendar. I built it with Angular. Here is the link to the source code and the live view.
I have made a simple calendar web application using it to show a holiday calendar. Initially, I created for four countries only.
After learning React, I feel like I want to rebuild the event calendar in React. So in order to experiment with it, I have updated the Holiday Calendar to use the newly created framework. Here is the new updated Holiday Calendar.
Besides rebuild it in react, I also would like to experiment with Ant Design. I think I have learn more about Ant Design during developing this app.
I also introduce the language feature into the app. Now the app supports up to 5 languages; English, Deutsch, Malay, Hindi and Chinese. And for the list of holidays, I have added information for 8 countries. There are US, UK, Germany, China, India, Singapore, Indonesia, and Malaysia.