To add your event to this public calendar add ngomgEvents@gmail.com as a guest in your Google or Outlook calendar and it will automatically add the event to this website.
Here are the steps:
Add an event to the ngomg.org calendar:
1. Open Google Calendar.
2. Open an event, or create a new one.
3. On the right, find the "Guests" section.
4. Add firstname.lastname@example.org
5. Click Save.
When you save your event, refresh this web page and you should see your event.