It would be useful to be able to create a smart collection based on Time of Day with a range. My current use for this is selecting sunrises or separately sunsets. Time of Day is an important attribute separately from the date. There are good capabilities to create a Smart Collection based on date, but not Time of Day. I looked through add-ons, but didn't see any filter or such capability. Maybe it would be possible by the SDK? Thanks for your help.