OBS Calculator

If a lady gets pregnant, her gynecologist always ask her about when
did she had her Last Menstrual Period (LMP), the reason is that on the
basis of LMP the gynecologist gets to calculate the Estimated Date of
Delivery (EDD) and the Period Of Gestation (POG).
Normally the gynecologist would use the calendar and a calculator for
doing the math, it is quite boring and most importantly it is time
taking. OBS CALCULATOR is an application which helps the doctor
calculate the EDD and POG from LMP without wasting their time on
calendar and calculator. The user just has to provide the LMP in a
given box and it will automatically calculate the EDD and POG.