The Fixed-Date Content option allows you to provide a date for each piece of content. The script will automatically display the content for the current date. (The date includes a year. If you have content that you will be using from one year to another, you should choose the Perpetual Content option.)
The Perpetual Date-Based Content option allows you to reuse your content over time. This is a good option if you want to create a Content Calendar that you will be using from year to year! In addition, you choose to randomize any of the date-based content so that the same content is available in both Date-Based format and in Random format, if you choose.
The Randomized Content means that a different piece of content will appear randomly whenever the page is refreshed, totally regardless of date.
The Progress Meter option generates a series of progress meter images that are spread out based on the date range you specify. You can create a progress meter that covers any date range. For example, here is a progress meter showing how much of this year has passed.
Year 2024 Progress: