Search by Start Date and/or End Date

Sometimes we start off with 1 color variant for a product. Then later we add a 2nd and even 4th color, but isn't yet available to sell so we assign it a future date ... however if we've since added hundreds of products, it's hard to keep track what future dates are nearing throughout the year. So if we can search by Start Date or End Date or Month we can easily see results for a given date and decide if we need to delay/extend the date or publish sooner.