The total number of days between Friday, April 27th, 1917 and Friday, December 9th, 2016 is 36,386 days.
This is equal to 99 years, 7 months, and 12 days.
This does not include the end date, so it's accurate if you're measuring your age in days, or the total days between the start and end date. But if you want the duration of an event that includes both the starting date and the ending date, then it would actually be 36,387 days.
If you're counting workdays or weekends, there are 25,990 weekdays and 10,396 weekend days.
If you include the end date of Dec 9, 2016 which is a Friday, then there would be 25,991 weekdays and 10,396 weekend days including both the starting Friday and the ending Friday.
36,386 days is equal to 5,198 weeks.
The total time span from 1917-04-27 to 2016-12-09 is 873,264 hours.
This is equivalent to 52,395,840 minutes.
You can also convert 36,386 days to 3,143,750,400 seconds.
April 27th, 1917 is a Friday. It is the 117th day of the year, and in the 17th week of the year (assuming each week starts on a Monday), or the 2nd quarter of the year. There are 30 days in this month. 1917 is not a leap year, so there are 365 days in this year. The short form for this date used in the United States is 4/27/1917, and almost everywhere else in the world it's 27/4/1917.
December 9th, 2016 is a Friday. It is the 344th day of the year, and in the 49th week of the year (assuming each week starts on a Monday), or the 4th quarter of the year. There are 31 days in this month. 2016 is a leap year, so there are 366 days in this year. The short form for this date used in the United States is 12/9/2016, and almost everywhere else in the world it's 9/12/2016.
This site provides an online date calculator to help you find the difference in the number of days between any two calendar dates. Simply enter the start and end date to calculate the duration of any event. You can also use this tool to determine how many days have passed since your birthday, or measure the amount of time until your baby's due date. The calculations use the Gregorian calendar, which was created in 1582 and later adopted in 1752 by Britain and the eastern part of what is now the United States. For best results, use dates after 1752 or verify any data if you are doing genealogy research. Historical calendars have many variations, including the ancient Roman calendar and the Julian calendar. Leap years are used to match the calendar year with the astronomical year. If you're trying to figure out the date that occurs in X days from today, switch to the Days From Now calculator instead.