The 2015 edition provides coordinated population, urban land area and density data for all 1,009 identified urban areas with at least 500,000 population. These urban areas account for approximately 52 percent of the world urban population. Largest Cities in 2015.
Due Date Calculator. This interactive Due Date Calculator will help you estimate the date your baby will arrive. Pregnancy usually lasts 280 days (40 weeks) from the first day of the woman's last menstrual period. This calculator is a general guide: every pregnancy is unique, and sometimes babies arrive sooner or later than expected. Always talk to your health care provider about your due date.
Once your pregnancy has been confirmed, what you most want to know is your due date. The average length of a pregnancy is 40 weeks, or 280 days, from the first day of the last normal menstrual period.Calculating the due date, or expected date of delivery, for a pregnancy is quite simple, then, if you know that date.Simply add nine months and seven days to the date, and you've got your pregnancy due date. Here's an example of how it works: Say the first day of the last normal menstrual period was January 1st.nce your pregnancy has been confirmed, what you most want to know is your due date. The average length of a pregnancy is 40 weeks, or 280 days, from the first day of the last normal menstrual period.