Advanced Date Time Calculator is a full-featured date time calculator that contains 5 main functions: calculates the result date time by adding/subtracting some years, months, weeks, days, hours, minutes and/or seconds to/from a base time, for instance: get the result time by adding 3.29 years, 1.8 weeks and 982 seconds to current time; calculates the differences (years, months, weeks, days, hours, minutes, seconds and integrated difference) between two times, it is usually used to get the years/months/weeks/days/hours/minutes counts for the past/future events based on current date time, such as birth, marriage and anniversary. So, it has initialized the start and end date time as current date time for you, just change one date time to count the number of years/months/weeks/days/hours/minutes/seconds of your past/future events based on current time, for instance: you can quickly get "How many seconds/days you live"; counts the days of week, weekdays, weekends between two dates, e.g. easily g ...