Post Page in Reverse Chronological Order

Hi, I have a number of event posts that are showing up in the widget in chronological order by event date, but they are in chronological order by the date the post was created on my page of posts. I’d like the page of posts to display in chronological order by event date as well. How do I do that?

Here’s the page of posts: https://www.sing.tacomayouthchorus.org/events/

The widget in the correct order is at the bottom of the home page: https://www.sing.tacomayouthchorus.org

https://www.ads-software.com/plugins/event-post/