This is a minor thing but I generally think we should avoid inline javascript in HTML. It's better to extract it into a separate js file that gets included on the page.  This is nice because it
- lowers the indentation level of the JS code
- makes it accessible to JS tooling like JSHint
- makes it possible to bundle, minify, and cache
- most importantly, enforces modularity, as opposed to here where it's not very obvious that you're using the `{{ day_value }}` template variable.

So I would do something like
```javascript
var SCHEDULED_REPORTS = {
    weekly_options: {{ weekly_day_options|JSON }},
    monthly_options: {{ monthly_day_options|JSON }},
    day_value: {{ day_value}}
}
```

and then reference those in a separate JS file.

Also, do we have a style guide on capitalization in JS?  I personally like to lowerCamelCase it in JS if only to visually differentiate it from Python, because why not?  My impression is that also tends to be the most common style in open source JS code.