I am developing a live website related to prayer timings, and currently, I'm using the Umm al-Qura Makkah calendar to display prayer times. While the website is live, I want to ensure the accuracy of the timings, especially for users in various regions. Is the Umm al-Qura calendar suitable for accurate prayer time calculations globally, or should I consider alternative methods for different regions? Would love insights or recommendations on this approach.