I need a formula to calculate ETA (more like Estimated Day of Arrival) for animal breeding purposes. I have a column with number of days bred and a column for the date checked. The average gestation period is 278 days.
Is there a formula in which I could use the start date(ex: 9/11/2019), days bred (ex:84), and gestation length (ex:278) to calculate delivery day?
Please and Thanks!!!