OK, but the date on the photo says 02/18/2020
The parents are both listed as mid-season bloomers. The scape appears to be a typical seedling scape with just one bud. The seedling does not have an early blooming genetic background. My guess is that it is not
a normal flowering episode. Some sort of developmental "accident" happened while the seed was developing in the pod and the growing point of the developing seed was switched from being vegetative to being reproductive. So when the seed sprouted it produced a few leaves and then the scape. Since the growing point was small only one flower bud was produced.
Now we have to think about any possible problems. Remember that daylilies develop by producing sets of leaves and growing larger with time. Normally when the growing point (shoot apical meristem) becomes large enough it becomes reproductive - it produces and effectively becomes the scape. Before it does that it must produce a new replacement vegetative meristem so that new leaves can be made.
There have been a number of reports of seedlings that were germinated and grown in the house flowering very quickly. Most of those reports have indicated that those seedlings did not survive their first winter outside.
There are undoubtedly many possible reasons that a first season seedling (that flowered much sooner than normal) does not survive its first winter. One of those reasons could be that it did not produce a vegetative meristem to replace the one used up making the scape. Another could be that it is unable to produce and store enough resources because of the strain of flowering (it used too much of its resources to flower).
you might want to watch how that seedling produces its leaves over the next few weeks to see if it did develop a vegetative meristem to replace the one used to produce the scape.