@sifuhall Did you review the configuration options? The holiday references the “Name” column from https://www.timeanddate.com/holidays/us/?hol=43122559. You can only have one holiday per effect, but you can have many effects. Please review the documentation and troubleshooting techniques listed at https://github.com/scottcl88/MMM-DynamicWeather.
Example:
{ module: 'MMM-DynamicWeather', position: 'fullscreen_above', config: { api_key: "your_key", locationID: "4140963", effects: [ { holiday: "Valentine's Day", images: ["heart1.png", "heart2.png"], }, { holiday: "Super Bowl", images: ["football.png",], } ], } },