You can inquire about birthdates in the following ways: 1. Paper-and-pencil inquiry: calculate birthdates manually according to the time and place of birth. 2. Online query: There are many free online query tools in birthdates. You can search online query in birthdates through search engines, and select the query website to fill in information such as date, hour and place of birth. 3. Ask the diviner: You can find a professional diviner to do birthdates's divination, and they will calculate the complete eight-character information for you through astrology, yin and yang, five elements and other elements.