Donald - I have no doubt that you have a hookeri, she says with uncertainty. Looks just like the ones I posted in the database. I did think mine was going to be an oxyp until it bloomed.
Years ago I lived in Austin and grew a lot of oxyp's. Was new to them and just kept potting new starts. Anyway, my NDH was in charge. We could pretty much tell when a bloom would open. So he would put a ladder up next to the plant and at the appointed time, almost always right around midnight, we - well usually me - could be up close and personal as a bloom would open and the perfume would fill the air. It was so wonderful. After awhile we got to where we would have small parties. And b/c we lived quite close to the U of TX there usually would be a student or 2 or 3 passing by and join us. The blooms were gone by 7 a.m. Back then we only knew the name as 'Night Blooming Cereus' altho I now know we had Oxyp's. Heck. What's in a name.
Sondra - gorgeous bloom you got there.