Relative date selection fields

Our company, and I’m sure many others, have forms for deals (this probably applies to other things as well) for “Start Date” and “End Date.” It would be extremely helpful if, after picking one date, the date picker for the other field would automatically go to the same month or day.

It is a pain in the butt to click through every month to pick a date almost a year in the future, even once. Having to do it twice is worse. If the date field boxes worked in relation to each other, it would save a ton of time for everyone.