Welcome to NGA
@ehart3000 
Where are you located? Short-day onions for bulbs are normally grown in the southern part of the US and planted in late summer to grow over the winter (when the days are short). Long-day onions are planted in the spring in the north, when the days are getting longer. You can try leaving them in the ground to see if they will "bulb up" if you aren't in a hot part of the country, but regardless of what type of onion they actually are you can certainly use them for scallions now. (On the other hand, if you are somewhere in the north the onions in your photo aren't too much larger than the plants that I started from seed in February, which I am just now planting out and expect to harvest bulbs sometime in September.)
