A photo that appears on my feed now needs to be shot at about the same time of year as when I post it, and be at least a year old. That way the photo reflects the season we're currently in (at least here in the Northern Hemisphere) and is old enough for me to be reasonably confident in my liking for the photo. Aperture allowed me to do this easily, as I could select the month number as part of a query for a smart collection - so for a November picture I could query for photos with a month number of '11'. While Lightroom has a powerful smart collections feature too, it lacks this ability. I can query for a date range, but that date range is anchored.