They’re hatched! At least I think so.
I believe the photo on the right, taken today (13 Mar 2019), is my first glimpse of an owlet. For comparison, the photo on the left, taken two days ago, is clearly an adult.
The eggs could/should be hatched, because the Cornell Lab of Ornithology gives the incubation period as 30 to 37 days, and I first saw them on the nest 36 days ago.