Clock displays current time, date, Chinese lunar calendar date in text, and Sunrise/Sunset times on the first page. Location is required to calculate accurate sun data. You can tap on the screen to go to the second page that shows the current moon phase and current Chinese date in numerical form. The third page is the day/night map of the world. Tap again to return. Please check for updates about once per year, since the lunar calendar stored internally may need to be adjusted.