توضیحات:

The calculator calculates the number of days elapsed from that date until today. Selected date may be the date of birth, marriage, or the date of the first meeting of another important event.
The calculator also determines the date that expires after full hundreds or thousands of days from the selected date.
How to use:
Press the "Set date". Select your date of birth, marriage, the first meeting or other important event.
The following shows the number of days elapsed from the selected date and the date at the end of the next full of thousands and hundreds of days from the selected date.