I wonder what the normal blooming season is for this plant. Since the nursery is located in Hawaii in optimal growing conditions, switching climates probably affected the timing of the blooms. I also really didn't give it a winter rest as your supposed to with dendrobium nobiles. The plant had flowers and new growths on it that were only a few inches tall, so since it was still actively growing, I didn't restrict water. These new growths are still a lot smaller that the older canes. I'm hoping I can bring it out in the summer for natural sun, rain and wind. And by winter, it'll be over a year under my care so it should be fully acclimated and I should be able to give it a proper winters rest.
I've also notice that flowers I've bloomed are more purple and there is less orange in the throat. I'll see if the color changes as the flowers age, or if it is just because of a difference in the environment. I have some other plants that when they rebloomed had a different appearance from the time I purchased them.
Update on March 13
The flowers have lightened and there are darker yellow tones. The flowers are still going strong. I hope they'll last a long time.