Days of Week, Months of Year

This indicator is designed to highlight selected days in a week OR selected months in a year to find patterns or get into the details of seasonality.

By the end of the year, you will need to update to a new version of the script, I will add 2021 as it begins.

Release Notes:

I asked ChatGPT to add support till 2030. The code seems to be working, but ping me if it is not.