I got the Ornithocephalus inflexus in March. Since it arrived with the old flower spikes, I thought I might have to wait for ages for it to bloom. It started spiking about 2 months ago and has been fully open for about 3 weeks. It is interesting that the old spikes are on the top of the plant and the new ones are below. I didn't remount it and it has clearly been on there awhile, so it wasn't because of accidentally mounting it upside down.
The Dendrobium aberrans came about 6 weeks ago. The bottom two flowers were open already. I figured the other buds would blast since it came all of the way from Ecuagenera, but the top two spikes opened this week
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It looks pure white to my eye, but the photos show that there's a bit of pink in there somewhere.