The author designed a scheduling function for Twilio Studio to handle holidays, irregular hours of operation, and different time zones. The function takes a JSON file as input, which contains schedules for holidays, partial days, and regular hours. The function evaluates the current date against these schedules and returns an object with information about whether the contact center is open or closed, along with additional details such as the description of the day. The function can be used in Twilio Studio flows to determine when to play a welcome message or a closed message to customers. A schema file was also created to validate the JSON file format, ensuring that it meets the required structure and formatting.