You can use the Excel function datedif to figure it out.

In one cell, enter the first date: 2/19/2005

In the next cell: 9/11/2007

In the next cell, enter: =DATEDIF(First date, Second date, “D”)

The “D” represents days, you would use “M” for months and “Y” for years.

The formula will give you the number of days between the two dates, which you can then multiply by 24 to find the number of hours.

The website given by the first answerer is adding to additional days for some reason, it is 934 days, not 936.

Add: I did some fooling around on the first site given, it adds two days to February.

Just use the linked calculator and input the needed dates (use sep 11 2007 for todays date, and feb 19 2005 for the birthdate)

22464 hours

2 years, 6 months, and 23 days

1347840 minutes

Try a calculator and a calender – here’s a hint: (days in 2005 minus January 1 through February 19, multiplied by the hours in a day) + (days in 2006 multiplied by the hours in a day) + (days in January through September 11, 2007 multiplied by the hours in a day.) But trust me, you are wasting your time. Most guys don’t give a rat’s butt about a flower for every hour you’ve known them or whatever.

thats easy you just take the amount of weeks in a year multipy by 7(7 days in a week). Multipy by 24 (24 hours in a day).

then do how many weeks its been since feb 19, 2007 and multipy that 7 then by 24 and add it to your first number.

hope thaat helps

i think of you propose ‘fee’ of time, fairly then ‘speed’. speed is actual distance traveled in keeping with unit time. Einstein’s theories of relativity point out that element could have diverse expenditures of ‘flowing’ (for prefer of a extra useful term). there is no absolute fee of time, basically as there is no absolute distance. each thing is relative (ought to be in comparison with some thing else). basically as you degree distance with a ruler or meter rod or some thing comparable, you degree time using a clock or a stopwatch or the vibration of atoms. yet there is no reason the fee of circulate of time shouldn’t selection. perhaps it strikes quicker some cases and slower at different cases, or maybe there are places interior the universe the place time flows slower. Einstein proved that the quicker some thing strikes, the slower time flowed for it. If somebody could desire to circulate at mild-speed, time might supply up for them. on account that there is no absolute fee of time, we are in a position to in straight forward terms degree its fee relative to some thing else. in recent times, the main precise degree of time is with the aid of using atomic clocks.

http://www.timeanddate.com/date/duration.html

Put in your start day and end day

Then simply multiply the days by 24 = 22,440