Python Code Coach: Day of the Week

You , i am not quite sure why you want to calculate all of this manually. It's not a bad idea, but due to difficult readability or other concerns it is recommended using the `datetime` module. i can see 2 issues to solve: > the input data can come in 2 different formats (as mentioned in the task description): "MM/DD/YYYY" or "Month Day, Year" so we have to handle both of these. > checking if a year is a leap year: just dividing the input year by 4 is *not sufficient*, and will lead to an issue in some cases both of these issues can be handled by using the `datetime` module.