Ordinal date

To accurately determine the day of the month from a given ordinal (od) starting from March 1 onwards, we need to account for the varying number of days in each month. The initial approach using modulo operations can lead to errors because it doesn't consider that months have different lengths. Here's a step-by-step method to correct this:

This method ensures that each day is correctly mapped to its corresponding month and day without errors due to varying month lengths.

• • Example Calculation:**

This approach systematically handles each step, ensuring accuracy across all months.